Where do these graded prices come from?

Medians of 18 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 Master Ball worth it?

Compare the graded medians below against the raw reference price of $3.54 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 18 completed sales

Master Ball graded prices.

As of August 20, 2026, Master Ball (Gym Challenge #116) trades across the graded ladder below, based on 18 real eBay completed sales; the raw copy’s reference price is $3.54.

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 · Master Ball

Grade	Median	Sales	vs Raw
Mint 9	$46.00	5	13.0×

CGC · Master Ball

Grade	Median	Sales	vs Raw
Gem Mint 10	$14.02	7	4.0×

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.