Trends In Book Auction Prices

12 Month Moving Average of Median Auction Prices
Date Price
2023-08-01 0:00AM 303.395
2023-09-01 0:00AM 301.7816666666667
2023-10-01 0:00AM 298.7816666666667
2023-11-01 0:00AM 295.5275
2023-12-01 0:00AM 292.6075
2024-01-01 0:00AM 293.77416666666664
2024-02-01 0:00AM 291.27416666666664
2024-03-01 0:00AM 291.27416666666664
2024-04-01 0:00AM 294.1983333333333
2024-05-01 0:00AM 291.3241666666667
2024-06-01 0:00AM 288.3241666666667
2024-07-01 0:00AM 289.35833333333335
2024-08-01 0:00AM 290.1091666666667
2024-09-01 0:00AM 287.90166666666664
2024-10-01 0:00AM 290.9966666666666
2024-11-01 0:00AM 288.89000000000004
2024-12-01 0:00AM 290.5491666666667
2025-01-01 0:00AM 289.3825
2025-02-01 0:00AM 287.8158333333333
2025-03-01 0:00AM 284.5533333333333
2025-04-01 0:00AM 285.9316666666667
2025-05-01 0:00AM 286.91166666666663
2025-06-01 0:00AM 284.9116666666667
2025-07-01 0:00AM 284.8283333333334
2025-08-01 0:00AM 285.99500000000006
2025-09-01 0:00AM 284.2441666666667
2025-10-01 0:00AM 286.29583333333335
2025-11-01 0:00AM 287.6566666666667
2025-12-01 0:00AM 288.20416666666665
2026-01-01 0:00AM 288.7208333333333
2026-02-01 0:00AM 292.1708333333333
2026-03-01 0:00AM 293.28333333333325
2026-04-01 0:00AM 292.5225
2026-05-01 0:00AM 294.3583333333333
2026-06-01 0:00AM 296.7991666666666
2026-07-01 0:00AM 297.695
2026-08-01 0:00AM 298.6116666666666

Year to Year Change in 12 Month Moving Average
Date Average
2024-08-01 0:00AM -13.2858333333333
2024-09-01 0:00AM -13.880000000000052
2024-10-01 0:00AM -7.785000000000082
2024-11-01 0:00AM -6.637499999999932
2024-12-01 0:00AM -2.058333333333337
2025-01-01 0:00AM -4.3916666666666515
2025-02-01 0:00AM -3.4583333333333712
2025-03-01 0:00AM -6.72083333333336
2025-04-01 0:00AM -8.266666666666652
2025-05-01 0:00AM -4.41250000000008
2025-06-01 0:00AM -3.4125000000000227
2025-07-01 0:00AM -4.529999999999973
2025-08-01 0:00AM -4.11416666666662
2025-09-01 0:00AM -3.6574999999999704
2025-10-01 0:00AM -4.700833333333264
2025-11-01 0:00AM -1.2333333333333485
2025-12-01 0:00AM -2.3450000000000273
2026-01-01 0:00AM -0.6616666666666902
2026-02-01 0:00AM 4.355000000000018
2026-03-01 0:00AM 8.729999999999961
2026-04-01 0:00AM 6.590833333333308
2026-05-01 0:00AM 7.446666666666658
2026-06-01 0:00AM 11.887499999999932
2026-07-01 0:00AM 12.866666666666617
2026-08-01 0:00AM 12.61666666666656

12 Month Moving Average of Sell Through Rate
Date Rate
2023-08-01 0:00AM 0.8086333333333334
2023-09-01 0:00AM 0.8095166666666668
2023-10-01 0:00AM 0.8068666666666666
2023-11-01 0:00AM 0.8059916666666668
2023-12-01 0:00AM 0.8040249999999999
2024-01-01 0:00AM 0.8036833333333333
2024-02-01 0:00AM 0.80075
2024-03-01 0:00AM 0.8012916666666666
2024-04-01 0:00AM 0.8000249999999999
2024-05-01 0:00AM 0.8018083333333333
2024-06-01 0:00AM 0.8037249999999999
2024-07-01 0:00AM 0.80025
2024-08-01 0:00AM 0.8007750000000001
2024-09-01 0:00AM 0.7983250000000001
2024-10-01 0:00AM 0.8044666666666668
2024-11-01 0:00AM 0.8007583333333335
2024-12-01 0:00AM 0.8038333333333333
2025-01-01 0:00AM 0.8016666666666666
2025-02-01 0:00AM 0.8001916666666666
2025-03-01 0:00AM 0.799725
2025-04-01 0:00AM 0.7991
2025-05-01 0:00AM 0.796925
2025-06-01 0:00AM 0.7960916666666668
2025-07-01 0:00AM 0.79745
2025-08-01 0:00AM 0.7989999999999999
2025-09-01 0:00AM 0.7995
2025-10-01 0:00AM 0.7975500000000001
2025-11-01 0:00AM 0.8000166666666667
2025-12-01 0:00AM 0.7965749999999999
2026-01-01 0:00AM 0.7958833333333334
2026-02-01 0:00AM 0.7996666666666666
2026-03-01 0:00AM 0.80015
2026-04-01 0:00AM 0.799975
2026-05-01 0:00AM 0.8030083333333332
2026-06-01 0:00AM 0.8040166666666666
2026-07-01 0:00AM 0.8027166666666665
2026-08-01 0:00AM 0.8015916666666666
12 Month Moving Average of Median Auction Prices
Date Price
2023-08-01 0:00AM 303.395
2023-09-01 0:00AM 301.7816666666667
2023-10-01 0:00AM 298.7816666666667
2023-11-01 0:00AM 295.5275
2023-12-01 0:00AM 292.6075
2024-01-01 0:00AM 293.77416666666664
2024-02-01 0:00AM 291.27416666666664
2024-03-01 0:00AM 291.27416666666664
2024-04-01 0:00AM 294.1983333333333
2024-05-01 0:00AM 291.3241666666667
2024-06-01 0:00AM 288.3241666666667
2024-07-01 0:00AM 289.35833333333335
2024-08-01 0:00AM 290.1091666666667
2024-09-01 0:00AM 287.90166666666664
2024-10-01 0:00AM 290.9966666666666
2024-11-01 0:00AM 288.89000000000004
2024-12-01 0:00AM 290.5491666666667
2025-01-01 0:00AM 289.3825
2025-02-01 0:00AM 287.8158333333333
2025-03-01 0:00AM 284.5533333333333
2025-04-01 0:00AM 285.9316666666667
2025-05-01 0:00AM 286.91166666666663
2025-06-01 0:00AM 284.9116666666667
2025-07-01 0:00AM 284.8283333333334
2025-08-01 0:00AM 285.99500000000006
2025-09-01 0:00AM 284.2441666666667
2025-10-01 0:00AM 286.29583333333335
2025-11-01 0:00AM 287.6566666666667
2025-12-01 0:00AM 288.20416666666665
2026-01-01 0:00AM 288.7208333333333
2026-02-01 0:00AM 292.1708333333333
2026-03-01 0:00AM 293.28333333333325
2026-04-01 0:00AM 292.5225
2026-05-01 0:00AM 294.3583333333333
2026-06-01 0:00AM 296.7991666666666
2026-07-01 0:00AM 297.695
2026-08-01 0:00AM 298.6116666666666

Year to Year Change in 12 Month Moving Average
Date Average
2024-08-01 0:00AM -13.2858333333333
2024-09-01 0:00AM -13.880000000000052
2024-10-01 0:00AM -7.785000000000082
2024-11-01 0:00AM -6.637499999999932
2024-12-01 0:00AM -2.058333333333337
2025-01-01 0:00AM -4.3916666666666515
2025-02-01 0:00AM -3.4583333333333712
2025-03-01 0:00AM -6.72083333333336
2025-04-01 0:00AM -8.266666666666652
2025-05-01 0:00AM -4.41250000000008
2025-06-01 0:00AM -3.4125000000000227
2025-07-01 0:00AM -4.529999999999973
2025-08-01 0:00AM -4.11416666666662
2025-09-01 0:00AM -3.6574999999999704
2025-10-01 0:00AM -4.700833333333264
2025-11-01 0:00AM -1.2333333333333485
2025-12-01 0:00AM -2.3450000000000273
2026-01-01 0:00AM -0.6616666666666902
2026-02-01 0:00AM 4.355000000000018
2026-03-01 0:00AM 8.729999999999961
2026-04-01 0:00AM 6.590833333333308
2026-05-01 0:00AM 7.446666666666658
2026-06-01 0:00AM 11.887499999999932
2026-07-01 0:00AM 12.866666666666617
2026-08-01 0:00AM 12.61666666666656

12 Month Moving Average of Sell Through Rate
Date Rate
2023-08-01 0:00AM 0.8086333333333334
2023-09-01 0:00AM 0.8095166666666668
2023-10-01 0:00AM 0.8068666666666666
2023-11-01 0:00AM 0.8059916666666668
2023-12-01 0:00AM 0.8040249999999999
2024-01-01 0:00AM 0.8036833333333333
2024-02-01 0:00AM 0.80075
2024-03-01 0:00AM 0.8012916666666666
2024-04-01 0:00AM 0.8000249999999999
2024-05-01 0:00AM 0.8018083333333333
2024-06-01 0:00AM 0.8037249999999999
2024-07-01 0:00AM 0.80025
2024-08-01 0:00AM 0.8007750000000001
2024-09-01 0:00AM 0.7983250000000001
2024-10-01 0:00AM 0.8044666666666668
2024-11-01 0:00AM 0.8007583333333335
2024-12-01 0:00AM 0.8038333333333333
2025-01-01 0:00AM 0.8016666666666666
2025-02-01 0:00AM 0.8001916666666666
2025-03-01 0:00AM 0.799725
2025-04-01 0:00AM 0.7991
2025-05-01 0:00AM 0.796925
2025-06-01 0:00AM 0.7960916666666668
2025-07-01 0:00AM 0.79745
2025-08-01 0:00AM 0.7989999999999999
2025-09-01 0:00AM 0.7995
2025-10-01 0:00AM 0.7975500000000001
2025-11-01 0:00AM 0.8000166666666667
2025-12-01 0:00AM 0.7965749999999999
2026-01-01 0:00AM 0.7958833333333334
2026-02-01 0:00AM 0.7996666666666666
2026-03-01 0:00AM 0.80015
2026-04-01 0:00AM 0.799975
2026-05-01 0:00AM 0.8030083333333332
2026-06-01 0:00AM 0.8040166666666666
2026-07-01 0:00AM 0.8027166666666665
2026-08-01 0:00AM 0.8015916666666666
12 Month Moving Average of Median Auction Prices
Date Price
2023-08-01 0:00AM 303.395
2023-09-01 0:00AM 301.7816666666667
2023-10-01 0:00AM 298.7816666666667
2023-11-01 0:00AM 295.5275
2023-12-01 0:00AM 292.6075
2024-01-01 0:00AM 293.77416666666664
2024-02-01 0:00AM 291.27416666666664
2024-03-01 0:00AM 291.27416666666664
2024-04-01 0:00AM 294.1983333333333
2024-05-01 0:00AM 291.3241666666667
2024-06-01 0:00AM 288.3241666666667
2024-07-01 0:00AM 289.35833333333335
2024-08-01 0:00AM 290.1091666666667
2024-09-01 0:00AM 287.90166666666664
2024-10-01 0:00AM 290.9966666666666
2024-11-01 0:00AM 288.89000000000004
2024-12-01 0:00AM 290.5491666666667
2025-01-01 0:00AM 289.3825
2025-02-01 0:00AM 287.8158333333333
2025-03-01 0:00AM 284.5533333333333
2025-04-01 0:00AM 285.9316666666667
2025-05-01 0:00AM 286.91166666666663
2025-06-01 0:00AM 284.9116666666667
2025-07-01 0:00AM 284.8283333333334
2025-08-01 0:00AM 285.99500000000006
2025-09-01 0:00AM 284.2441666666667
2025-10-01 0:00AM 286.29583333333335
2025-11-01 0:00AM 287.6566666666667
2025-12-01 0:00AM 288.20416666666665
2026-01-01 0:00AM 288.7208333333333
2026-02-01 0:00AM 292.1708333333333
2026-03-01 0:00AM 293.28333333333325
2026-04-01 0:00AM 292.5225
2026-05-01 0:00AM 294.3583333333333
2026-06-01 0:00AM 296.7991666666666
2026-07-01 0:00AM 297.695
2026-08-01 0:00AM 298.6116666666666

Year to Year Change in 12 Month Moving Average
Date Average
2024-08-01 0:00AM -13.2858333333333
2024-09-01 0:00AM -13.880000000000052
2024-10-01 0:00AM -7.785000000000082
2024-11-01 0:00AM -6.637499999999932
2024-12-01 0:00AM -2.058333333333337
2025-01-01 0:00AM -4.3916666666666515
2025-02-01 0:00AM -3.4583333333333712
2025-03-01 0:00AM -6.72083333333336
2025-04-01 0:00AM -8.266666666666652
2025-05-01 0:00AM -4.41250000000008
2025-06-01 0:00AM -3.4125000000000227
2025-07-01 0:00AM -4.529999999999973
2025-08-01 0:00AM -4.11416666666662
2025-09-01 0:00AM -3.6574999999999704
2025-10-01 0:00AM -4.700833333333264
2025-11-01 0:00AM -1.2333333333333485
2025-12-01 0:00AM -2.3450000000000273
2026-01-01 0:00AM -0.6616666666666902
2026-02-01 0:00AM 4.355000000000018
2026-03-01 0:00AM 8.729999999999961
2026-04-01 0:00AM 6.590833333333308
2026-05-01 0:00AM 7.446666666666658
2026-06-01 0:00AM 11.887499999999932
2026-07-01 0:00AM 12.866666666666617
2026-08-01 0:00AM 12.61666666666656

12 Month Moving Average of Median Auction Prices
Date Rate
2023-08-01 0:00AM 0.8086333333333334
2023-09-01 0:00AM 0.8095166666666668
2023-10-01 0:00AM 0.8068666666666666
2023-11-01 0:00AM 0.8059916666666668
2023-12-01 0:00AM 0.8040249999999999
2024-01-01 0:00AM 0.8036833333333333
2024-02-01 0:00AM 0.80075
2024-03-01 0:00AM 0.8012916666666666
2024-04-01 0:00AM 0.8000249999999999
2024-05-01 0:00AM 0.8018083333333333
2024-06-01 0:00AM 0.8037249999999999
2024-07-01 0:00AM 0.80025
2024-08-01 0:00AM 0.8007750000000001
2024-09-01 0:00AM 0.7983250000000001
2024-10-01 0:00AM 0.8044666666666668
2024-11-01 0:00AM 0.8007583333333335
2024-12-01 0:00AM 0.8038333333333333
2025-01-01 0:00AM 0.8016666666666666
2025-02-01 0:00AM 0.8001916666666666
2025-03-01 0:00AM 0.799725
2025-04-01 0:00AM 0.7991
2025-05-01 0:00AM 0.796925
2025-06-01 0:00AM 0.7960916666666668
2025-07-01 0:00AM 0.79745
2025-08-01 0:00AM 0.7989999999999999
2025-09-01 0:00AM 0.7995
2025-10-01 0:00AM 0.7975500000000001
2025-11-01 0:00AM 0.8000166666666667
2025-12-01 0:00AM 0.7965749999999999
2026-01-01 0:00AM 0.7958833333333334
2026-02-01 0:00AM 0.7996666666666666
2026-03-01 0:00AM 0.80015
2026-04-01 0:00AM 0.799975
2026-05-01 0:00AM 0.8030083333333332
2026-06-01 0:00AM 0.8040166666666666
2026-07-01 0:00AM 0.8027166666666665
2026-08-01 0:00AM 0.8015916666666666
12 Month Moving Average of Median Auction Prices
Date Price
2023-08-01 0:00AM 303.395
2023-09-01 0:00AM 301.7816666666667
2023-10-01 0:00AM 298.7816666666667
2023-11-01 0:00AM 295.5275
2023-12-01 0:00AM 292.6075
2024-01-01 0:00AM 293.77416666666664
2024-02-01 0:00AM 291.27416666666664
2024-03-01 0:00AM 291.27416666666664
2024-04-01 0:00AM 294.1983333333333
2024-05-01 0:00AM 291.3241666666667
2024-06-01 0:00AM 288.3241666666667
2024-07-01 0:00AM 289.35833333333335
2024-08-01 0:00AM 290.1091666666667
2024-09-01 0:00AM 287.90166666666664
2024-10-01 0:00AM 290.9966666666666
2024-11-01 0:00AM 288.89000000000004
2024-12-01 0:00AM 290.5491666666667
2025-01-01 0:00AM 289.3825
2025-02-01 0:00AM 287.8158333333333
2025-03-01 0:00AM 284.5533333333333
2025-04-01 0:00AM 285.9316666666667
2025-05-01 0:00AM 286.91166666666663
2025-06-01 0:00AM 284.9116666666667
2025-07-01 0:00AM 284.8283333333334
2025-08-01 0:00AM 285.99500000000006
2025-09-01 0:00AM 284.2441666666667
2025-10-01 0:00AM 286.29583333333335
2025-11-01 0:00AM 287.6566666666667
2025-12-01 0:00AM 288.20416666666665
2026-01-01 0:00AM 288.7208333333333
2026-02-01 0:00AM 292.1708333333333
2026-03-01 0:00AM 293.28333333333325
2026-04-01 0:00AM 292.5225
2026-05-01 0:00AM 294.3583333333333
2026-06-01 0:00AM 296.7991666666666
2026-07-01 0:00AM 297.695
2026-08-01 0:00AM 298.6116666666666

Year to Year Change in 12 Month Moving Average
Date Average
2024-08-01 0:00AM -13.2858333333333
2024-09-01 0:00AM -13.880000000000052
2024-10-01 0:00AM -7.785000000000082
2024-11-01 0:00AM -6.637499999999932
2024-12-01 0:00AM -2.058333333333337
2025-01-01 0:00AM -4.3916666666666515
2025-02-01 0:00AM -3.4583333333333712
2025-03-01 0:00AM -6.72083333333336
2025-04-01 0:00AM -8.266666666666652
2025-05-01 0:00AM -4.41250000000008
2025-06-01 0:00AM -3.4125000000000227
2025-07-01 0:00AM -4.529999999999973
2025-08-01 0:00AM -4.11416666666662
2025-09-01 0:00AM -3.6574999999999704
2025-10-01 0:00AM -4.700833333333264
2025-11-01 0:00AM -1.2333333333333485
2025-12-01 0:00AM -2.3450000000000273
2026-01-01 0:00AM -0.6616666666666902
2026-02-01 0:00AM 4.355000000000018
2026-03-01 0:00AM 8.729999999999961
2026-04-01 0:00AM 6.590833333333308
2026-05-01 0:00AM 7.446666666666658
2026-06-01 0:00AM 11.887499999999932
2026-07-01 0:00AM 12.866666666666617
2026-08-01 0:00AM 12.61666666666656

12 Month Moving Average of Sell Through Rate
Date Rate
2023-08-01 0:00AM 0.8086333333333334
2023-09-01 0:00AM 0.8095166666666668
2023-10-01 0:00AM 0.8068666666666666
2023-11-01 0:00AM 0.8059916666666668
2023-12-01 0:00AM 0.8040249999999999
2024-01-01 0:00AM 0.8036833333333333
2024-02-01 0:00AM 0.80075
2024-03-01 0:00AM 0.8012916666666666
2024-04-01 0:00AM 0.8000249999999999
2024-05-01 0:00AM 0.8018083333333333
2024-06-01 0:00AM 0.8037249999999999
2024-07-01 0:00AM 0.80025
2024-08-01 0:00AM 0.8007750000000001
2024-09-01 0:00AM 0.7983250000000001
2024-10-01 0:00AM 0.8044666666666668
2024-11-01 0:00AM 0.8007583333333335
2024-12-01 0:00AM 0.8038333333333333
2025-01-01 0:00AM 0.8016666666666666
2025-02-01 0:00AM 0.8001916666666666
2025-03-01 0:00AM 0.799725
2025-04-01 0:00AM 0.7991
2025-05-01 0:00AM 0.796925
2025-06-01 0:00AM 0.7960916666666668
2025-07-01 0:00AM 0.79745
2025-08-01 0:00AM 0.7989999999999999
2025-09-01 0:00AM 0.7995
2025-10-01 0:00AM 0.7975500000000001
2025-11-01 0:00AM 0.8000166666666667
2025-12-01 0:00AM 0.7965749999999999
2026-01-01 0:00AM 0.7958833333333334
2026-02-01 0:00AM 0.7996666666666666
2026-03-01 0:00AM 0.80015
2026-04-01 0:00AM 0.799975
2026-05-01 0:00AM 0.8030083333333332
2026-06-01 0:00AM 0.8040166666666666
2026-07-01 0:00AM 0.8027166666666665
2026-08-01 0:00AM 0.8015916666666666


  • Gonnelli: Auction 72 Books, Autographs & Manuscripts October 6th-8th 2026
    Gonnelli: Document bearing Napoleon's autograph signature. 1797. Starting bid € 900
    Gonnelli: Manuscript Libro de giustitiati nella città di Ferrara. 1441-1717. Starting bid € 9.000
    Gonnelli: Anonymous Jewish Siddur in Hebrew. Germany, 15th century. Starting bid € 1.200
    Gonnelli: Auction 72 Books, Autographs & Manuscripts October 6th-8th 2026
    Gonnelli: Chagall, Drawings for the Bible. 1960 Starting bid € 1.200
    Gonnelli: Duchamp, Le Surrealisme en 1947. Starting bid € 2.600
    Gonnelli: Valturio, [De re militari]. 1483. Important provenance. Starting bid € 15.000
    Gonnelli: Auction 72 Books, Autographs & Manuscripts October 6th-8th 2026
    Gonnelli: Ketham, Fasciculus medicine. 1500. Starting bid € 10.000
    Gonnelli: Ketham, Fasciculus medicie. 1522. Starting bid € 10.000
    Gonnelli: Kepler, Harmonices mundi libri V. 1619. Starting bid € 15.000
    Gonnelli: Auction 72 Books, Autographs & Manuscripts October 6th-8th 2026
    Gonnelli: Kepler, Tabulae Rudolphinae. 1627. Starting bid € 8.000
    Gonnelli: Kondakov, ISTORIYA I PAMYATNIKI VIZANTIISKOI EMALI. [Histoire et monuments des emaux byzantins]. 1892. Starting price € 5.000
    Gonnelli: Strada, Imperatorum Romanorum. 1559. Starting bid € 12.000
  • Heritage Auctions, Oct. 14: Bible, in English. Fine restoration binding in the style of the Queen’s binders.
    Heritage Auctions, Oct. 14: Magnus Hundt, the elder. First edition of one of the earliest printed books with anatomical illustrations.
    Heritage Auctions, Oct. 14: Agatha Christie. Cards on the Table. First edition.
    Heritage Auctions, Oct. 14: F. Scott Fitzgerald. The Beautiful and Damned. First edition, first printing.
    Heritage Auctions, Oct. 14: Isaac Asimov. I, Robot. First edition, presentation copy.
    Heritage Auctions, Oct. 14: Bible, in English. Geneva-Tomson-Junius. London: Robert Barker, [colophon 1612]/1611.
  • Sotheby’s
    Reason and Revolution:
    Extraordinary Works from a Distinguished Private Collection
    Part I
    Live Sale 20 October
    Sotheby’s, Oct. 20: Copernicus, Nicolaus. De revolutionibus orbium colestium, Nuremberg, 1543, first edition.
    Sotheby’s, Oct. 20: Newton, Isaac, Sir. Autograph manuscript worksheet, Cambridge, probably May 1694.
    Sotheby’s, Oct. 20: Euclid. Praeclarissimus Liber Elementorum in Artem Geometrie, Venice, Ratdolt, 25 May 1482, first edition of the first substantial mathematical work to appear in print, Durazzo copy.
    Sotheby’s, Oct. 20: Galilei, Galileo. Sidereus nuncius …, Venice, 1610, first edition of the foundation of modern astronomy.
    Sotheby’s, Oct. 20: Kepler, Johannes. Astronomia nova aitiologitos …, Prague or Heidelberg, 1609, first edition, contemporary vellum, the Chasles copy.
    Sotheby’s, Oct. 20: Cellarius, Andreas. Harmonia macrocosmica seu atlas universalis et novus ..., Amsterdam, Jan Jansson, 1661, brilliantly handcolored.