If you don't mind putting some parts together, you can "build" your own PC from parts. A place like Tigerdirect.ca makes it very easy with bare bone packages that you can buy. I just had an email from them with such a package and it was only $299. Many other PC shops do similar packages.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70