Every Gengar card we price, most valuable first. Prices are what copies actually sold for, updated daily.
The same Pokemon is also printed as Mega Gengar, Gengar & Mimikyu and M Gengar, priced separately because the game treats them as different cards.
What a Gengar card is worth
The most valuable Gengar on this list is Gengar (H9) from Skyridge at $3,161£2,379€2,784, and the 56 priced copies across 37 sets are worth $19k£14k€17k 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.
Gengar is printed in Japanese as well: 43 cards across 31 sets, the most valuable of them Gengar from Pokemon Web at $3,300£2,484€2,906. 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 Gengar sold for $207,679£156,308€182,896. 1st Edition and reverse holo printings are priced separately from the standard card, because they do not trade at the same money. Rarities here include Secret Rare, Special Illustration Rare.
If you are trying to identify which Gengar 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: Skyridge, Sword & Shield Promo Cards, Legendary Collection.