That's the one that was selling for $3200.00. That thing ruined 128D prices for quite a while!
Some of the Raspberry Pi board prices are just as crazy - like $150.xx for a model B! Wonder what that excuse is - that's brand new hardware that sells for $35.00.
Ebay is a strange place. A lot of it I think is down to the fact that you can list an item and it only costs you a small fee to list it. So people will give it a cheeky shot at selling something for a rediculous price.
As for the Pi's well they have been comanding silly prices on Ebay since it was released. It's one of the must have gadgets and the sellers know that there will be someone stupid enough to buy them in order to avoid waiting for the next batch. Give it a few weeks and see what the Wii U starts selling at. Again people will be stupid enough to buy them instead of waiting for one.