So I have viewed eBay's past auctions for unlocked and jailbroken 3G's. I have a 3G about a year old in pristine condition w/ invisible shield on its jailbroken and I can unlock it via blackrain app left over from my jailbreak. Question is though what could I fetch for this? It seems prices range from $250-$550 via recent eBay auctions for similiar iphones? What can I reasonably expect? $350?