What's lowest price for an Iphone 3G by now

I'm thinking of purchasing a smartphone because its like having a mini laptop that you can just hold in your palm.Am wondering since there are many versions of the iphone. What's the price of an Iphone 3G? Am sure the price has reduced after the release of the Iphone 5.

Iphone 3G aren't sold in stores anymore. You would have to look on amazon or eBay. But most of them aren't in good condition plus some are really expensive if its never been open.