New MacBook Air and Mac Mini best prices
From 9to5Toys:

We noted before the release of the new Apple products that it often pays to wait a week before buying Apple’s new products. Not only don’t you get “the first ones off the line”, but prices drop significantly over the first week.
A number of Apple Authorized Retailers/affiliates are new selling Apple’s new MacBook Airs and Minis at prices up to $100 lower than Apple. MacMall and Amazon appear to be the lowest.
MacMall has the MacBook Air for the following prices (note: $30 more is taken off at checkout):
1.60GHz 11″ MacBook Air 2GB/64GB $940.89
1.60GHz 11″ MacBook Air 4GB/128GB $1,129.07
1.70GHz 13″ MacBook Air 4GB/128GB $1,216.37
1.70GHz 13″ MacBook Air 4GB/256GB $1,502.52
Update: The MacMall deals are over.
Mac Minis are lowest at Amazon, however…
2.30GHz Core i5 Mac mini $569.00
2.50GHz Core i5 Mac mini $769.00
And the 2.00GHz Core i7 Mac mini Server is lowest – $959.99 at MacConnection.
For RAM upgrades, you aren’t going to do better than this 8GB for $45