The 1990 Bowman Frank Thomas #320 is valued at $2.10 raw, $24.00 in PSA 9, $204 in PSA 10 as of November 3, 2026. Its market value is up 5.5% over the last 30 days, from $1.99 to $2.10. Across the 89 days we have tracked it, it has ranged from $1.79 to $2.99, and it currently sits 30% below that high. With 956 recorded sales, it ranks #125 of 500 baseball cards we track by trading volume.
On current values, a PSA 9 ($24.00) is worth $3.10 less than a raw copy plus a $25.00 grading fee, while a PSA 10 ($204, 97.3× raw) is worth $177 more, so the difference comes down to the grade. The cheapest PSA 10 copy we matched on eBay when we last checked on November 2, 2026 was $225, 10% above our PSA 10 market value of $204, so eBay offers no discount on this card right now.
About $2.10 raw, $24.00 in PSA 9, $204 in PSA 10, based on our market values as of November 3, 2026. Its market value is up 5.5% over the last 30 days, from $1.99 to $2.10.
On current values, a PSA 9 ($24.00) is worth $3.10 less than a raw copy plus a $25.00 grading fee, while a PSA 10 ($204, 97.3× raw) is worth $177 more, so the difference comes down to the grade. This ignores gem rate and selling fees, so treat it as a best case.
The cheapest PSA 10 copy we matched on eBay when we last checked on November 2, 2026 was $225, 10% above our PSA 10 market value of $204, so eBay offers no discount on this card right now.