Every Sealeo card we price, most valuable first. Prices are what copies actually sold for, updated daily.
The same Pokemon is also printed as Team Aqua's Sealeo, priced separately because the game treats them as different cards.
What a Sealeo card is worth
The most valuable Sealeo on this list is Sealeo from EX Legend Maker at $34.21£25.75€30.13, and the 11 priced copies across 11 sets are worth $68£52€60 together. Most of that sits in a handful of printings: the older the set and the scarcer the print run, the wider the gap to the rest.
Sealeo is printed in Japanese as well: 9 cards across 9 sets, the most valuable of them Sealeo from Secret of the Lakes at $4£3.01€3.52. Switch the list above to Japanese to read those, or to Both to rank the two catalogues against each other.
The highest PSA 10 on record for Sealeo sold for $700£526.85€616.47. reverse holo printings are priced separately from the standard card, because they do not trade at the same money.
If you are trying to identify which Sealeo you have, the set name is printed on the card and the collector number sits in the bottom corner. Open the card here and the page carries every printing of it, the graded prices, and whether grading the copy is worth the fee. Sets to start with: EX Legend Maker, EX Hidden Legends, EX Power Keepers.