IntoMobile points us to http://www.unlockedg1.org/, which is an odd little site that looks to be nothing more than a listing of unlocked T-Mobile G1 auctions on eBay.

We say 'odd' because we're not entirely clear how the site intends to, you know, make money. But like all things free on the internets, that's not really your problem. Instead you get a convenient place that lists 20 auctions for unlocked G1s, completely with expiration time, buy-it-now indicators, and the current price. If you're on the hunt for an unlocked G1 and that Developer Edition doesn't strike your fancy, it's a decent place to check.

Thanks James!