Every Ekans card we price, most valuable first. Prices are what copies actually sold for, updated daily.
What a Ekans card is worth
The most valuable Ekans on this list is Ekans from EX Team Rocket Returns at $52.50£39.51€46.24, and the 16 priced copies across 15 sets are worth $156£117€137 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.
Ekans is printed in Japanese as well: 17 cards across 15 sets, the most valuable of them Ekans (Master Ball Pattern) from Pokemon Card 151 at $9.19£6.92€8.09. 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 Ekans sold for $966.51£727.44€851.18. 1st Edition and 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 Ekans 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 Team Rocket Returns, Expedition, EX Dragon Frontiers.