You've always wondered what it would be like to live in a cave, right? Curt & Deborah Sleeper and their three children know what it's like. They purchased a cave on 2.8 acres of land and built themselves a house inside the cave! But with the current economic downturn, the Sleepers are needing to sell their cave house to pay off the mortgage. So, what do you do when you need to sell something unusual? Yes, that's right; you sell it on eBay. That's what they are attempting to do. Interested? Read more here.