Where do these graded prices come from?

Medians of 13 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 Giratina - SM151 (Prerelease) worth it?

Compare the graded medians below against the raw reference price of $36.02 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 13 completed sales

Giratina - SM151 (Prerelease) graded prices.

As of August 20, 2026, Giratina - SM151 (Prerelease) (SM Black Star Promos #SM151) trades across the graded ladder below, based on 13 real eBay completed sales; the raw copy’s reference price is $36.02.

Across SM Black Star Promos, PSA 10 copies sell for 34.1× 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 · Giratina - SM151 (Prerelease)

Grade	Median	Sales	vs Raw
Mint 9	$125.00	4	3.5×
NM-MT 8	$448.98	4	12.5×

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.