Every Toxicroak card we price, most valuable first. Prices are what copies actually sold for, updated daily.
The same Pokemon is also printed as Toxicroak G, priced separately because the game treats them as different cards.
What a Toxicroak card is worth
The most valuable Toxicroak on this list is Toxicroak EX (102 Full Art) from XY - Flashfire at $24.89£18.73€21.92, and the 21 priced copies across 19 sets are worth $57£43€50 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.
Toxicroak is printed in Japanese as well: 19 cards across 15 sets, the most valuable of them Toxicroak EX from Wild Blaze at $18.41£13.86€16.21. 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 Toxicroak sold for $1,464£1,102€1,290. 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 Toxicroak 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: XY - Flashfire, Arceus, Majestic Dawn.