A AutographData

Auction Price Adjuster

Auction houses report "prices realized," which includes the Buyer's Premium. Because these premiums have risen from 10% in the 1990s to over 25% today, raw realized prices distort the true historical value curve.

JavaScript Required

To use the dynamic calculator, please enable JavaScript. Alternatively, apply these standard historical formulas manually:

Pre-1990s: Hammer Price = Realized Price (usually 0% or 10% BP)
1990s-2000s: Hammer = Realized / 1.15 (15% BP)
2010s: Hammer = Realized / 1.20 (20% BP)
Current: Hammer = Realized / 1.25+ (25%+ BP depending on tier)