How much is a PSA 10 Blastoise GX #SM189?

A PSA 10 Blastoise GX #SM189 from Pokemon Promo is currently priced at $758 based on completed sales tracked on PokeInvest.

Is grading Blastoise GX #SM189 worth it?

With a raw price of $15 and a PSA 10 selling for $758, grading Blastoise GX #SM189 has a potential gross margin of $743 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 Blastoise GX #SM189: what's the price difference?

A PSA 10 Blastoise GX #SM189 sells for about $758 versus about $52 for a graded 9 (PSA, CGC and BGS 9 sales combined), so the 10 carries a 14.4x premium based on recent sales tracked on PokeInvest.

What's the raw price of Blastoise GX #SM189?

The raw (ungraded) price of Blastoise GX #SM189 from Pokemon Promo is currently $20, based on live market data tracked daily by PokeInvest.

Blastoise GX #SM189

Blastoise GX #SM189 (Promo) sells for about $15.26 ungraded and $758 in PSA 10. PSA has graded 2,125 copies, 545 of them 10s. Prices are medians of completed sales, updated November 11, 2026.

Pokemon Promo

Market price

$15.26

20 sales · latest 5 days ago

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

20 sold in 47 days · latest 5 days ago

$10.00 $39.95

1 sale well outside the rest ($39.95). A median is barely moved by them, which is why it is the number shown.

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	$758.30 est · pop 545	$188.73 est · pop 68	$986.00 est	$455.00 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? 26% of 2,125 PSA-graded copies came back a 10. Raw $15.26 → PSA 10 $758.30 est. Expected value after PSA's fee ($60): +$130.58 per copy.

We grade it for you, $27 a card → Mail it to us. CGC Authorized Dealer: we check it, submit it and ship the slab back insured. No account, no forms.

Run the full math → Is yours a 10? Pre-grade it, $3

Sales volume: Top 10% of cards

Get an email when the price moves

One email when it hits your price, with the cheapest copy on eBay. No account needed.