Is it worth grading Mega Diancie ex?

JP: Mega Dream ex · 238

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$22.91TCGplayer market
PSA 10 SOLD$77.0527 completed sales
Grade 9 SOLD$26.0011 completed sales · mixed graders
IF IT GRADES 10+$29after $25 fee

A raw Mega Diancie ex from JP: Mega Dream ex currently sells for about $22.91. Across 27 completed eBay sales, a PSA 10 has a median price of $77.05. After a $25 grading fee, a 10 would net roughly $29.14. But a Grade 9 (mixed graders) has a median of $26.00 across 11 sales — which works out to −$21.91 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$77.0527 sales
CGC10P$45.788 sales
CGC10$31.5310 sales
TAG10$105.008 sales
GRADE9$26.0011 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.