Where do these graded prices come from?

Medians of 4 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 Chespin (Collector Chest) worth it?

Compare the graded medians below against the raw reference price of $6.84 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 4 completed sales

Chespin (Collector Chest) graded prices.

As of July 30, 2026, Chespin (Collector Chest) (XY Black Star Promos #XY88) trades across the graded ladder below, based on 4 real eBay completed sales; the raw copy’s reference price is $6.84.

Across XY Black Star Promos, PSA 10 copies sell for 47.2× their raw reference price on average (51 cards, 923 PSA 10 completed sales tracked).

As of July 30, 2026Raw price & chart →Grading ROI calculator →

PSA · Chespin (Collector Chest)

Grade	Median	Sales	vs Raw
EX 5	$26.00	3	3.8×

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.