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 Mary's Impulse worth it?

Compare the graded medians below against the raw reference price of $2.17 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 10 completed sales

Mary's Impulse graded prices.

As of August 21, 2026, Mary's Impulse (Expedition Base Set #142) trades across the graded ladder below, based on 10 real eBay completed sales; the raw copy’s reference price is $2.17.

Across Expedition Base Set, PSA 10 copies sell for 27.2× their raw reference price on average (56 cards, 339 PSA 10 completed sales tracked).

As of August 21, 2026Raw price & chart →Grading ROI calculator →

CGC · Mary's Impulse

Grade	Median	Sales	vs Raw
Gem Mint 10	$65.00	3	30.0×

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.