Where do these graded prices come from?

Medians of 11 real eBay completed sales aggregated per grade (PSA, BGS, CGC) — a completed-sale evidence layer, not listing asks. Sample sizes are shown per grade; thin grades deserve caution.

Is grading Brock's Protection worth it?

Compare the graded medians below against the raw reference price of $6.61 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 11 completed sales

Brock's Protection graded prices.

As of August 20, 2026, Brock's Protection (Gym Challenge #101) trades across the graded ladder below, based on 11 real eBay completed sales; the raw copy’s reference price is $6.61.

Across Gym Challenge, PSA 10 copies sell for 77.3× their raw reference price on average (33 cards, 259 PSA 10 completed sales tracked).

As of August 20, 2026Raw price & chart →Grading ROI calculator →

PSA · Brock's Protection

Grade	Median	Sales	vs Raw
NM-MT 8	$24.00	5	3.6×

CGC · Brock's Protection

Grade	Median	Sales	vs Raw
Gem Mint 10	$11.00	4	1.7×

Medians of real eBay completed sales per grade; small sample sizes deserve caution. Prices are dated reference values — cite them with the as-of date above. Attribution: CardIntel (cardintel.io). See the methodology.