Best Koffing Cards to Grade
The Koffing 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: Koffing (Expedition Base Set) at +$260 best-case net.
| # | Card | Raw | PSA 10 | Cost | Net (best) | Risk-adj. |
|---|---|---|---|---|---|---|
| 1 | $24 | $358 | $74 | +$260 | −$1 | |
| 2 | $41 | $327 | $73 | +$212 | +$20 | |
| 3 | $31 | $311 | $73 | +$207 | −$25 | |
| 4 | $6 | $251 | $73 | +$172 | −$22 | |
| 5 | $26 | $225 | $72 | +$127 | +$28 | |
| 6 | $16 | $215 | $72 | +$127 | −$37 | |
| 7 | $8 | $165 | $72 | +$86 | −$13 | |
| 8 | $32 | $120 | $71 | +$17 | — |
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).