Just as in with the overpriced deals, there are some underpriced deals you can make a bundle on. Just do some looking on eBay and find some auctions to take a chance on. Even though an auction may seem expensive at $100-$300 I'd you so the math you could turn around and flip that lot for $1000-$1500 (as I've done before) and make a few hundred dollars. Just do your research and sniff out the deals.