Best Brock Cards to Grade

The Brock 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: Brock (Gym Heroes) at +$3,079 best-case net.

Best cards to grade, ranked by risk-adjusted grading profit

#	Card	Raw	PSA 10	Cost	Net (best)	Risk-adj.
1	BrockGym Heroes #15 · 5% gem rate	$83	$3,391	$229	+$3,079	−$5
2	Brock's RhydonGym Heroes #2 · 7.1% gem rate	$122	$2,040	$125	+$1,793	+$85
3	Brock's NinetalesGym Challenge #3 · 20.7% gem rate	$148	$1,875	$124	+$1,604	+$304
4	Brock's GolemGym Heroes #20 · 22.5% gem rate	$31	$542	$85	+$426	+$31
5	Brock's OnixGym Heroes #21 · 17.8% gem rate	$13	$341	$73	+$255	+$31
6	Brock's SandslashGym Heroes #23 · 21.5% gem rate	$20	$297	$73	+$203	−$13
7	Brock's SandslashGym Challenge #36 · 26.1% gem rate	$8	$264	$73	+$183	+$8
8	Brock's ZubatGym Heroes #24 · 17% gem rate	$16	$259	$73	+$170	−$6
9	Brock's GritTeam Up #172 · 52.2% gem rate	$65	$251	$73	+$114	+$37
10	Brock's VulpixGym Heroes #73 · 11.8% gem rate	$7	$174	$72	+$96	−$39
11	Brock's DugtrioGym Challenge #22 · 34.4% gem rate	$21	$175	$72	+$83	−$5
12	BrockGym Heroes #98 · 26.3% gem rate	$13	$150	$71	+$65	−$20
13	Brock's PrimeapeGym Challenge #35 · 28.6% gem rate	$6	$126	$71	+$48	−$22
14	Brock's GritEvolutions #107 · 31.1% gem rate	$11	$119	$71	+$37	−$29
15	Brock's LickitungGym Heroes #41 · 11.8% gem rate	$9	$91	$71	+$11	−$44
16	Brock's GolbatGym Heroes #39 · 13.6% gem rate	$6	$87	$71	+$10	−$46

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).

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