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 Dowsing Machine worth it?

Compare the graded medians below against the raw reference price of $6.77 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 5 completed sales

Dowsing Machine graded prices.

As of August 17, 2026, Dowsing Machine (Plasma Storm #128) trades across the graded ladder below, based on 5 real eBay completed sales; the raw copy’s reference price is $6.77.

Across Plasma Storm, PSA 10 copies sell for 63.0× their raw reference price on average (10 cards, 129 PSA 10 completed sales tracked).

As of August 17, 2026Raw price & chart →Grading ROI calculator →

PSA · Dowsing Machine

Grade	Median	Sales	vs Raw
NM-MT 8	$16.15	3	2.4×

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.