Where do these graded prices come from?

Medians of 24 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 Nidoking (H18) worth it?

Compare the graded medians below against the raw reference price of $120.00 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 24 completed sales

Nidoking (H18) graded prices.

As of July 8, 2026, Nidoking (H18) (Aquapolis #H18) trades across the graded ladder below, based on 24 real eBay completed sales; the raw copy’s reference price is $120.00.

As of July 8, 2026Raw price & chart →Grading ROI calculator →

PSA · Nidoking (H18)

Grade	Median	Sales	vs Raw
Mint 9	$412.50	8	3.4×
NM-MT 8	$256.88	4	2.1×
EX 5	$150.00	3	1.3×

CGC · Nidoking (H18)

Grade	Median	Sales	vs Raw
Mint 9	$299.00	5	2.5×

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.