2-day only. Dell Outlet has 20% off $349+ on refurbished Dell Inspiron 531s Slim Desktops, limit 500 uses w/ coupon code: 5?6D9?WSL1ZT1$ (exp 9/12).
When you are at the stock list page, choose model from dropdown box, then click "Filter Results". Stock changes fast. sort by price to find the lowest priced configurations.
All refurbished systems come w/ limited time warranty, 21 day return, and brand new packaging and manuals.
Slim Inspiron 531s Desktop w/ AMD Athlon 64 X2 Dual-Core 5200+ 2.70GHZ, 2GB, 500GB, DVD+-RW, Vista Home Premium for only $359 - 20% dell coupon = $287, $30 shipping.