Players took screenshots and sent them to CoroCoro Magazine, and the five winning entrants received 20 custom cards with their screenshots printed on them. This card, for instance, was part of a promotional gimmick for Pokémon Snap back in 1999. Most of the cards on this list were never available in retail. You can also check out our list of the best Pokemon card packs to buy now if these are out of your price range. The odds are unlikely… but stranger things have happened. So the next time you're rummaging through a garage sale or decluttering your attic, keep an eye out. So we set out to determine the 11 most expensive Pokémon cards ever sold, auctioned, or traded for.