As popular as this device is going to be, I bet on black friday there will be some discounts or bonus incentives with various sites. Like buy N810 and get a free flash drive or something.

I haven't gone through the policies yet of the various sites posted, but I know amazon (who doesn't carry it yet) has a pre-order policy that if you pre-order it at say $450 and it drops to $390 on release day, you pay $390. If it drops down to $300 during your pre-order but jumps to $400 on release day, you pay the $300. So I'd look for shops that have a similar policy.