Where do these graded prices come from?

Medians of 3 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 Mr. Stone's Project worth it?

Compare the graded medians below against the raw reference price of $0.96 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 3 completed sales

Mr. Stone's Project graded prices.

As of August 5, 2026, Mr. Stone's Project (Holon Phantoms #88) trades across the graded ladder below, based on 3 real eBay completed sales; the raw copy’s reference price is $0.96.

Across Holon Phantoms, PSA 10 copies sell for 49.4× their raw reference price on average (35 cards, 218 PSA 10 completed sales tracked).

As of August 5, 2026Raw price & chart →Grading ROI calculator →

CGC · Mr. Stone's Project

Grade	Median	Sales	vs Raw
Gem Mint 10	$12.50	3	13.0×

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.