Verizon extended their promo through 10/15. Up to $200 for an iPhone 4. New models you can get more obviously.
What are the details of the Apple promotion? I tried to take an old iPhone 4 into Verizon yesterday and they initially wouldn't accept it because the glass on the back was broken. Had to spend $25 at a repair shop across the street to repair the back and then bring it back to Verizon to get the full $200. Still a good deal for an 8gb iPhone 4, even if the net came down to $175. Does Apple care about condition?