Decent $700 build?

****EDIT I see now that you can't build one***

Higher quality parts (based on what I am seeing from newegg)
USB 3 and with a 7850 that is at least twice as fast as the 7750
Only lack is you have to buy mice/keyboard separately $25 left for them

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD FX-6300 3.5GHz 6-Core Processor ($129.99 @ Amazon)
Motherboard: Asus M5A97 R2.0 ATX AM3+ Motherboard ($85.49 @ Amazon)
Memory: Corsair XMS3 8GB (2 x 4GB) DDR3-1600 Memory ($37.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($70.90 @ Outlet PC)
Video Card: XFX Radeon HD 7850 2GB Video Card ($179.99 @ Newegg)
Case: Cooler Master Elite 431 Plus (Black) ATX Mid Tower Case ($53.98 @ Amazon)
Power Supply: Corsair Builder 430W 80 PLUS Bronze Certified ATX12V Power Supply ($24.99 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($17.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Total: $678.30
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-03-07 00:37 EST-0500)