Well the emachines that I linked to had a $50 rebate, so nothing to write home about. Yeah you gotta wait for awhile to get your money back, but you do get it back. My mother purchased an eMachines last year, Celeron D 2.53 Ghz, with a free monitor and printer. After getting all the rebates back, the system cost $350. I threw in an extra 256 Mb of RAM and for $20.
Better yet, if you want to see a good deal, check out what
Office Depot has for this week. It's a BTO system, and the upgrades are usually very low in price. Of course you have to send in for rebates but I just got notification of my HP rebate today. So yeah you gotta have patience but in the end it's worth it.