Where do these graded prices come from?

Medians of 16 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 Poliwhirl worth it?

Compare the graded medians below against the raw reference price of $1.57 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 16 completed sales

Poliwhirl graded prices.

As of August 18, 2026, Poliwhirl (Unseen Forces #68) trades across the graded ladder below, based on 16 real eBay completed sales; the raw copy’s reference price is $1.57.

Across Unseen Forces, PSA 10 copies sell for 17.5× their raw reference price on average (58 cards, 948 PSA 10 completed sales tracked).

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

CGC · Poliwhirl

Grade	Median	Sales	vs Raw
Gem Mint 10	$31.35	12	20.0×

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.