I ordered my N810 from Circuit City and had no problems. Their "in stock" seems to be accurate - the day I ordered they had it and a few hours later they were "unavailable". A few days later, they had them in stock again, and a little while later they were again unavailable. I've been watching their site just to see it go back and forth, lol. I'm not sure how many they get in stock at a time, but the website does seem to reflect changes at least. Shipping was also fast and I didn't pay extra - I ordered on Friday evening and had my unit on the following Wednesday (and it came all the way across the US!).

Just thought I'd share my positive experience.