http://gizmodo.com/5063008/newegg-offering-4gb-macbook-ram-upgrade-for-45

Sure, the new MacBook's about to be revealed and that's super exciting, but some of us around here are actually starting to feel the effects of the recession and could sure use a good deal right now. For you belt-tighteners, here's a cheap and quick upgrade from Newegg. The online retailer's offering a Corsair 4GB DDR2 kit (two sticks of 2GB RAM) for Apple notebooks for $45 after a $40 mail-in rebate. Get it quick though, the deal ends tomorrow, October 15th.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820233066