Google Shopping shows that 8 GB of RAM costs more than I expected. I don't think I'll be able to find it for significantly under USD $200.
What do you need 8GB for? - i80and
Running Firefox with more than ten tabs. My system with 2 GB of RAM just can't handle Firefox, OpenOffice, Pidgin, Rhythmbox, and a few other desktop-y stuff. - James Rishabh Mishra
4GB works pretty well for me. Of course, I whine to no end about just having to run DBus, so I'm probably a poor gauge... - i80and