Uh, lots of shops are offering them for $800-$850, and you don't have to buy $100s of dollars of other stuff to get that price like Crapfield. I don't know why people still use them, really.
I just have to disagree with you there. When I bought my D2 from Crutchfield, I got a great deal on it. It cost me $1200 for the unit, I got free installation because of a promotion Pioneer was running, which, by the way, you only qualified for if you bought the unit from an authorized deal, I got a free AVIC-S1, free installation kit, instructions and the peace of mind knowing that anything I needed to return, Crutchfield would pay for the return shipping and charge me no restocking fee.
When I sold my AVIC-S1, it brought the total I paid down to $800, which is the same price they could be found on eBay for, yet I got all those free things AND a complete warranty.
Not to mention Crutchfield has the BEST customer service of any company I've ever worked with. They are all knowledgeable and helpful and if I have a problem with my headunit, stereo, basically anything that I can somehow relate to my headunit, they'll give me tech support that available any time I would be working on my car.
A month or two later I ordered another thing for my car, and they sent me the wrong harness that I needed to insall the part. I called them, and they overnighted the part for saturday delivery. I got it by 10 am the Sat morning and I was able to install the part that day. I didn't even have to ask. Find me another company that will do that.
Sorry to go on a rant... I just seem to have a soft spot for Crutchfield.