Where do these graded prices come from?

Medians of 87 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 Blastoise worth it?

Compare the graded medians below against the raw reference price of $349.00 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 87 completed sales

Blastoise graded prices.

As of August 20, 2026, Blastoise (Secret Wonders #2) trades across the graded ladder below, based on 87 real eBay completed sales; the raw copy’s reference price is $349.00.

Across Secret Wonders, PSA 10 copies sell for 102.5× their raw reference price on average (11 cards, 97 PSA 10 completed sales tracked).

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

PSA · Blastoise

Grade	Median	Sales	vs Raw
Mint 9	$300.00	14	0.9×
NM-MT 8	$129.99	19	0.4×
NM 7	$90.00	17	0.3×
EX-MT 6	$55.19	6	0.2×
EX 5	$27.25	5	0.1×

CGC · Blastoise

Grade	Median	Sales	vs Raw
Mint 9	$261.25	4	0.7×

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.