Where do these graded prices come from?

Medians of 48 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 worth it?

Compare the graded medians below against the raw reference price of $28.78 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

Graded Market · 48 completed sales

Nidoking graded prices.

As of August 21, 2026, Nidoking (FireRed & LeafGreen #8) trades across the graded ladder below, based on 48 real eBay completed sales; the raw copy’s reference price is $28.78.

Across FireRed & LeafGreen, PSA 10 copies sell for 52.5× their raw reference price on average (29 cards, 203 PSA 10 completed sales tracked).

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

PSA · Nidoking

Grade	Median	Sales	vs Raw
Mint 9	$210.20	10	7.3×
NM-MT 8	$78.00	12	2.7×
NM 7	$44.99	3	1.6×

CGC · Nidoking

Grade	Median	Sales	vs Raw
Gem Mint 10	$260.00	6	9.0×
Mint 9	$114.95	7	4.0×

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.