Target's iPhone 4 trade-in service expires tomorrow
As long as you’re holding an iPhone 3G or 3GS in your hand right now, you can head on over to your local Target and inquire about their trade-in service. Basically, this limited time service allows you to trade in your old iPhone and receive credit towards the purchase of the AT&T iPhone 4 with a contract. However, this service is set to expire tomorrow, so you’d better think quickly on your feet if you still want to part ways with your old model.
If you decide to let it go, you can obtain approximately a $100 credit for a 16GB iPhone 3G and up to a $200 one for a 32GB iPhone 3GS. Target’s trade-in service has been going on since February 6th, but it’s set to expire tomorrow; February 12th.
source: Target via SlashGear