Where do these graded prices come from?

Medians of 14 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.

Graded Market · 14 completed sales

Tropical Tidal Wave - 036 (2006 World Championships) [Staff] graded prices.

Q: Is grading Tropical Tidal Wave - 036 (2006 World Championships) [Staff] worth it?

Compare the graded medians below against the raw reference price of $499.95 and subtract grading fees. The CardIntel Grading ROI calculator runs this math with live numbers.

As of August 20, 2026, Tropical Tidal Wave - 036 (2006 World Championships) [Staff] (Nintendo Black Star Promos #036) trades across the graded ladder below, based on 14 real eBay completed sales; the raw copy’s reference price is $499.95.

Across Nintendo Black Star Promos, PSA 10 copies sell for 27.6× their raw reference price on average (37 cards, 494 PSA 10 completed sales tracked).

As of August 20, 2026Raw price & chart →Grading ROI calculator →

PSA · Tropical Tidal Wave - 036 (2006 World Championships) [Staff]

Grade	Median	Sales	vs Raw
Mint 9	$699.99	8	1.4×

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.