Where do these graded prices come from?

Medians of 10 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 Porygon (103b) worth it?

Compare the graded medians below against the raw reference price of $7.97 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 10 completed sales

Porygon (103b) graded prices.

As of August 20, 2026, Porygon (103b) (Aquapolis #103b) trades across the graded ladder below, based on 10 real eBay completed sales; the raw copy’s reference price is $7.97.

Across Aquapolis, PSA 10 copies sell for 27.5× their raw reference price on average (40 cards, 201 PSA 10 completed sales tracked).

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

CGC · Porygon (103b)

Grade	Median	Sales	vs Raw
Gem Mint 10	$35.17	8	4.4×

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.