I just got my 17-55 in the mail yesterday from Adorama. It was an awesome deal too. They had them refurbished for $769. You can't tell by looking at it that it is a refurb, and it super sharp. Also, it comes with a three month warranty from Adorama!
I was a little annoyed with Adorama though. They ship via UPS and I live in a locked building. Normally, when someone ships with UPS, I just call UPS and have them hold it for me, but Adorama has a policy that says they can't do that. The attempt three deliveries and then it gets sent back to them. I was pretty pissed about that, but by some dumb luck, the UPS guy was able to get in to my building, probably because someone was just leaving. Oh well, just wanted to share my experiece with Adorama with you.