I just purchased my iPhone 4 32GB from the Radio shack around the corner from my house. I had previously owned a 32GB 3GS up until 15 minutes ago. As soon as I got there, I asked if they had any iPhone 4's and they told me they had ONE (!!!) 32GB, perfect I thought. I asked about the trade in process with the 3GS and they told me that I could trade in my 3GS (perfect condition) with cable and brick for 200$, so I put in an extra 100$ (This was my plan the whole time) and After a few signatures, they activated my 4 and I walked out with a new iPhone! Really a great purchasing experience, for my first brand new iPhone, all of my others have been second hand. Radioshack rocks!