Is it worth grading Kingdra ex - 131?

SV: Scarlet & Violet Promo Cards · 131

Yes — if it grades 10. A 9 loses money at current prices. You need the 10. 9s are pooled across graders here — PriceCharting has no PSA-9-only figure.
RAW NOW$93.57TCGplayer market
PSA 10 SOLD$379.9935 completed sales
Grade 9 SOLD$104.9927 completed sales · mixed graders
IF IT GRADES 10+$261after $25 fee

A raw Kingdra ex - 131 from SV: Scarlet & Violet Promo Cards currently sells for about $93.57. Across 35 completed eBay sales, a PSA 10 has a median price of $379.99. After a $25 grading fee, a 10 would net roughly $261.42. But a Grade 9 (mixed graders) has a median of $104.99 across 27 sales — which works out to −$13.58 after fees. A 9 loses money at current prices. You need the 10. 9s are pooled across graders here — PriceCharting has no PSA-9-only figure.

Every grade, with the sales behind it

GRADEMEDIANSALES ON RECORD
PSA10$379.9935 sales
CGC10P$481.0010 sales
CGC10$189.5015 sales
TAG10$442.1611 sales
ACE10$219.0511 sales
GRADE9.5$158.3710 sales
GRADE9$104.9927 sales
GRADE8$88.8410 sales
GRADE7$31.057 sales
GRADE6$38.003 sales

Now find a raw one to buy

Knowing a card is worth grading is the easy half. PokeSnipez watches eBay around the clock and flags raw copies of this card closing below market — so you can actually make the trade, not just read about it.

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Every figure on this page is an observed number. Raw prices come from TCGplayer; graded medians are completed eBay sales, shown with the sale count behind each one. We don't estimate, model, or fill in gaps — if a grade has no sales on record, it isn't listed. Grading outcomes are not guaranteed: most raw cards do not come back a 10, which is exactly why the 9-grade number is on this page. Where PriceCharting has no PSA-9-only figure we show its pooled 9 — PSA, BGS, CGC and SGC together — and label it as such rather than call it a PSA 9.