Never been here before, so forgive me if this is misplaced. Didn't know where else to go.

I used to collect Neopets trading cards and one time I got one of those one-of-a-kind sketch cards. There are only a few on the internet and they're all listed for $100.

My question is this; is there actually a market for a $100 neopets card? How should I go about selling it?