Where do these graded prices come from?

Medians of 45 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 (4) worth it?

Compare the graded medians below against the raw reference price of $650.00 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 45 completed sales

Blastoise (4) graded prices.

As of August 18, 2026, Blastoise (4) (Expedition Base Set #004) trades across the graded ladder below, based on 45 real eBay completed sales; the raw copy’s reference price is $650.00.

Across Expedition Base Set, PSA 10 copies sell for 26.9× their raw reference price on average (56 cards, 333 PSA 10 completed sales tracked).

As of August 18, 2026Raw price & chart →Grading ROI calculator →

PSA · Blastoise (4)

Grade	Median	Sales	vs Raw
Mint 9	$1.8K	6	2.8×
NM-MT 8	$930.00	5	1.4×
NM 7	$647.50	9	1.0×
EX-MT 6	$492.50	4	0.8×

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.