Odd Price

So as well as all my normal cards, I put my foil land cards into the system too "just because". Anyway, I added a land card from 10th Edition and the price appears to be a bit mental, see - http://deckbox.org/sets/687229?v=l&s=j&o=d

Any idea what's up there? I hardly think anyone is buying 10th edition foil land cards for nearly $2000...