I bought it refurbed for 800.00.
When I bought it, it came with one 2.0 processor, 256 ram and a 40gb maxtor. I put in a bunch of stuff I already had, and I have been upgrading it since. It still has 2 years left on its 3 year warranty. That's what I love about Dell small business, even their refurb systems come with three year warranties.
I thought about buying a new Precision 750 system. They have some mad deals going on right now. Free quadrouple memory, free upgrade to 80gb SATA hard drive, video card upgrade, and 150.00 off. I speced out a 3.0 ghz Nocona with 1GB of DDR2 and a Fire GL PCI Express for about 1700. That is an insane price for that kind of system.
EDIT: I looked again and I can get a 670 system with a 2.8, 1GB DDR2, Fire GL, 80GB SATA for 1200 dollars. Must..... resist..... temptation.......