I bought a 7D w/kit lens when BigValueInc was listed on CR with a great deal. The camera was in working order and appeared to be new, but because they are not listed as a Canon authorized seller I did have questions about the warranty. They did not address those warranty issues in the eBay listing at the time, stating in the listing that it came with a Canon USAwarranty when it apparently did not per Canon if they are non authorized. Their tracking and communication stunk, plain and simple. I got a great deal, the camera worked, and a warranty wasn't a huge issue because this is my backup camera anyway, so I'm not going to complain too much. However, if you need a warranty that is absolutely certain, or you need good communication from sellers...read their negative feedback before you buy.
As for the price...the 6D really should have been introduced closer to this price. While it added some new features, I really view it as a step down from the 5DmkII in terms of build quality and ergonomics, and pricing it above the much-discounted 5DmkII really seemed greedy when it was announced. Personally, I ended up getting a 5DmkII because at the time (last Fall) it was cheaper and because I like the ergonomics.