Where do these graded prices come from?

Medians of 5 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 Alolan Marowak GX - SM187 worth it?

Compare the graded medians below against the raw reference price of $21.97 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 5 completed sales

Alolan Marowak GX - SM187 graded prices.

As of August 3, 2026, Alolan Marowak GX - SM187 (SM Black Star Promos #SM187) trades across the graded ladder below, based on 5 real eBay completed sales; the raw copy’s reference price is $21.97.

Across SM Black Star Promos, PSA 10 copies sell for 1114.5× their raw reference price on average (94 cards, 5,293 PSA 10 completed sales tracked).

As of August 3, 2026Raw price & chart →Grading ROI calculator →

PSA · Alolan Marowak GX - SM187

Grade	Median	Sales	vs Raw
Mint 9	$33.00	3	1.5×

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.