Tentacool cards.

What a Tentacool card is worth

The most valuable Tentacool on this list is Tentacool from Legendary Collection at $131.02, and the 14 priced copies across 13 sets are worth $233 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.

If you are trying to identify which Tentacool 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: Legendary Collection, EX Legend Maker, Aquapolis.