They have the Pioneer Elite PRO-730HD 64" on sale for $4,395. The best I can do locally is $5,000, plus sales tax. I'm very leery of making such a big purchase online, though.
They charge a 15% restocking fee no matter what condition you return an item in (even new). They are probably NOT authorized, and on an item like that I would think you would want to buy it from a 'real' dealer.
I made the mistake of buying something from them (NAD T762 receiver). I wanted to cancel it to buy from an authorized dealer (only a few $ more). They had already shipped the unit, so when it arrived home I didn't open it and I called them. They still insisted that they were going to charge me 15%, even though I did not open it. I will never buy from them again.
Change the 'number of days' drop down on the main list page to 30 and you will see negative threads about this company.