I sent them my working iPhone in February after receiving a quote of $150. They initially tried to claim the phone was broken, but I subsequently (a month later) got a supervisor to review it. He found that it worked and agreed to honor the original quote. I heard nothing, until June, when I got an e-mail telling me my payment was in the mail. I still have not received it, nine months later, and all attempts to contact them through their website since have been ignored. A trouble ticket submitted a month ago is still "waiting for assignment to a representative".
This company has effectively stolen my phone. I have complained to the Better Business Bureau as well.