8GB DDR3 1333MHz = 25$
2GB DDR3 1333MHz = 10$
Ram is extremely cheap.
I payed 60e for 2x 1GB 1600MHz Gail Black Dragon modules 2 years ago.
For 400e he can get 2x High end GPU in SLI mode, and im tlaking about GT570.
The most important part is that he does not buy a cheap ass crappy MoBo. Mother boards are a bit expensive, 200e, but for the budget he wants to spend, he will be able to build an i7 kick ass rig.
[Edit]
Also Crollo, shit is not cheap, only RAM is cheap, and CPUs dropped a bit, everything else is over priced. Not to talk about HDDs. They were 3x cheaper this time last year.