Where do these graded prices come from?

Medians of 8 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-Z GX - SM216 worth it?

Compare the graded medians below against the raw reference price of $6.02 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 8 completed sales

Porygon-Z GX - SM216 graded prices.

As of August 20, 2026, Porygon-Z GX - SM216 (SM Black Star Promos #SM216) trades across the graded ladder below, based on 8 real eBay completed sales; the raw copy’s reference price is $6.02.

Across SM Black Star Promos, PSA 10 copies sell for 34.0× their raw reference price on average (99 cards, 6,076 PSA 10 completed sales tracked).

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

PSA · Porygon-Z GX - SM216

Grade	Median	Sales	vs Raw
Mint 9	$30.75	3	5.1×

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.