Is it worth grading Mewtwo GX?

Hidden Fates: Shiny Vault · SV59/SV94

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$142.04TCGplayer market
PSA 10 SOLD$340.0018 completed sales
Grade 9 SOLD$122.5016 completed sales · mixed graders
IF IT GRADES 10+$173after $25 fee

A raw Mewtwo GX from Hidden Fates: Shiny Vault currently sells for about $142.04. Across 18 completed eBay sales, a PSA 10 has a median price of $340.00. After a $25 grading fee, a 10 would net roughly $172.96. But a Grade 9 (mixed graders) has a median of $122.50 across 16 sales — which works out to −$44.54 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$340.0018 sales
CGC10P$405.008 sales
CGC10$191.7512 sales
BGS10$351.008 sales
TAG10$325.007 sales
ACE10$134.567 sales
GRADE9.5$168.758 sales
GRADE9$122.5016 sales
GRADE8$96.138 sales
GRADE7$73.924 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.

See live grade snipes →

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.