How much is a PSA 10 Magikarp & Wailord GX #SM166?

A PSA 10 Magikarp & Wailord GX #SM166 from Pokemon Promo is currently priced at $56105 based on completed sales tracked on PokeInvest.

Is grading Magikarp & Wailord GX #SM166 worth it?

With a raw price of $50 and a PSA 10 selling for $56105, grading Magikarp & Wailord GX #SM166 has a potential gross margin of $56055 before PSA fees (from $59.99 a card, more for higher declared values). Use the PokeInvest PSA Calculator for a full ROI breakdown.

PSA 9 vs PSA 10 Magikarp & Wailord GX #SM166: what's the price difference?

A PSA 10 Magikarp & Wailord GX #SM166 sells for about $56105 versus about $2614 for a graded 9 (PSA, CGC and BGS 9 sales combined), so the 10 carries a 21.5x premium based on recent sales tracked on PokeInvest.

What's the raw price of Magikarp & Wailord GX #SM166?

The raw (ungraded) price of Magikarp & Wailord GX #SM166 from Pokemon Promo is currently $52, based on live market data tracked daily by PokeInvest.

Home / Promo / SM Black Star Promos / Magikarp & Wailord GX #SM166

Magikarp & Wailord GX #SM166

Magikarp & Wailord GX #SM166 (Promo) sells for about $49.90 ungraded and $56,105 in PSA 10. PSA has graded 1,421 copies, 10 of them 10s. Prices are medians of completed sales, updated November 11, 2026.

Pokemon Promo

Market price

$49.90

4 sales · latest 3 weeks ago

Sales we held out are listed below, not counted here.

4 sold in 47 days · latest 3 weeks ago

$49.90 $49.90

$49.90 3 weeks ago Magikarp & Wailord GX - SM166 · Near Mint · Normal · English $49.90 3 weeks ago Magikarp & Wailord GX - SM166 · Near Mint · Normal · English $49.90 4 weeks ago Magikarp & Wailord GX - SM166 · Near Mint · Normal · English $49.90 2 months ago Magikarp & Wailord GX - SM166 · Near Mint · Normal · English

Every sale is a completed listing. Click any line to open it.

Price by grade

1 from real sales · 4 est

Grade	PSA	CGC	BGS	SGC
10	$56,105 est · pop 10	$22,442 est · pop 1	$72,937 est	$33,663 est

Medians of completed sales — click one to see them. Arrows compare the last 90 days with the period before. last sold means one or two sales, so we show the most recent one rather than a median. est is an estimate we have not confirmed. pop is how many exist at that grade. How we price

Grade it? 1 in 142 of 1,421 PSA-graded copies came back a 10. Raw $49.90 → PSA 10 $56,105 est. Expected value after PSA's fee ($60, or $599 if it gems): +$330.69 per copy.

Run the full math → Is yours a 10? Pre-grade it, $3 or we grade it for you, $27

Sales volume: Top 10% of cards

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$

Promo card

Part of the SM Black Star Promos. See the whole set →

Handed out with Towering Splash-GX Box.

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Price History

Raw PSA 10

Graded by

PSA

1,421

graded

0.7%

10 in PSA 10

CGC

198

graded

0.5%

1 at 10 or better

How CGC grades work

CGC grades above 9: Pristine sits above Gem Mint, Perfect above that.

Gem Mint 10 1 9.5 1 9 28

These are two different pools of submissions, so this compares what each grader did, not what either would do with the same card.

Population Distribution

PSA 10 10

PSA 9 168

PSA 8 554

PSA 7 388

PSA 6 169

PSA 5 47

PSA 4 27

PSA 3 13

PSA 2 11

PSA 1 25

CGC Gem Mint 10 1

CGC 9.5 1

CGC 9 28

CGC 8.5 66

CGC 8 40

CGC 7.5 16

CGC 7 11

CGC 6.5 4

CGC 6 6

CGC 5.5 7

CGC 5 4

CGC 4.5 3

CGC 4 3

CGC 3 2

CGC Authentic 1

CGC Authentic — Altered 5

198 graded by CGC

Need these prices and population counts in a spreadsheet or app? PokeInvest Data API

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