go look again. and make sure you're looking at 1x4gb or 2x4gb kits, not bullshit with 2x2 or 4x1 like they so often end up being. 2gb modules are 10usd or less, cuz nobody wants them for upgrading. but ddr2 sodimm 4gb modules are 30-40usd each. that's today, tomorrow? who tf knows but it won't be less.