Amazon has the mini for $549, free shipping and no tax, ordered one yesterday and also ordered from Best Buy a 20 inch monitor for $79.99 plus tax, came to $96.65 so I got a new mini set up for $645.65. Works for me as I have keyboards and a mouse already.
Maybe there will be a cyber Monday deal.......Otherwise it looks like B&H has the best price for what I'm looking for. $574.99 shipped for a 2.26, 2GB and 160 GB HDD (Ill swap the drive to a 500 GB I have lying around here)
If you look at Fry's Electronics for Saturday (it was a one day deal) you could get the $799 Mac Mini for $100 off. That's the best mini deal I've ever seen, they had $70 off a while back, but $100 off on the Saturday AFTER black friday impressed me. Couldn't convince the Mrs. to go for it though.