Best Gym Cards to Grade
The Gym cards where grading pays off most — ranked by net profit from raw to PSA 10 after real grading costs, with each card's estimated gem rate and risk-adjusted return. Top pick: Gym Badge (XY Black Star Promos) at +$429 best-case net.
| # | Card | Raw | PSA 10 | Cost | Net (best) | Risk-adj. |
|---|---|---|---|---|---|---|
| 1 | $60 | $575 | $86 | +$429 | — | |
| 2 | $32 | $415 | $74 | +$309 | — | |
| 3 | $18 | $361 | $74 | +$270 | — | |
| 4 | $16 | $302 | $73 | +$213 | — | |
| 5 | $31 | $142 | $71 | +$39 | −$31 |
Net (best) = PSA 10 value − raw value − grading cost (PSA fees as of 2026-06-28). Risk-adjusted weights every grade by its estimated likelihood from PSA population (cumulative and biased toward nicer copies — a guide, not a guarantee).