How each era's graded prices have moved since the start, set at 100. Each month compares the same cards and grades. It counts completed sales only and does not predict prices.
152 on Oct 20; up 52 percent in a year
Apr 20 to Oct 20
154 on Oct 20; up 54 percent in a year
Jul 25 to Oct 20
130 on Oct 20; up 30 percent in a year
Apr 20 to Oct 20
181 on Oct 20; up 81 percent in a year
Aug 3 to Oct 20