The card -- a Pikachu Illustrator -- is one of six total in circulation that were made especially as a reward to those who won the Pokemon Card Game Illustration Contest, Geek.com reported.
It previously sold for about $20,000.
The seller, whose name was not reported, set a high Buy It Now price, but expects to get about $50,000 for the card.
As of Sunday afternoon, the auction had 398 offers.
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