I was able to spec it at that same site through pricewatch.com ( http://www.pricewatch.com/price/motherboard_combos/fx-8320 ):
Description    Unit Price    
   cb-amd   Combo w/ AMD FX (Socket AM3+)
  w/ AMD FX8320 - Eight-Core (8 x 4.0GHz - 16MB Cache)
  ASRock 960GM-VGS3
  Systems - CPU Fan Only
  2GB DDR3 1600MHz (1 x 2GB - Single Module)
  500GB 7200RPM SATA3 6gb/sec - Hard Drive
  Premium Assemble, Setup, Pretest, & Set CPU FSB & Power / Cooling
  400 Watt Power Supply
  Combo - 1 Year   $305.78   Remove

Barebones w/ AMD FX (Socket AM3+)
  w/ AMD FX8350 - Eight-Core (8 x 4.2GHz - 16MB Cache)
  ASRock 960GM-VGS3
  Systems - CPU Fan Only
  2GB DDR3 1600MHz (1 x 2GB - Single Module)
  500GB 7200RPM SATA3 6gb/sec - Hard Drive
  Standard Value Mid-Tower Case
  400 Watt Power Supply
  Standard - Build, Burn-in, Test & Ship Out in Approx 3 to 5 Business Days
  Barebones - 1 Year   $327.88

Granted, if you're willing to go i5 I can go much lower. SSD and solid PSU in addition to dual channel memory that is actually good seems to be missing from these benchmarks. You're going to starve any 8 core setup in single.

If you're willing to go AMD. This isn't including the -25$, cashback, or free 2day if you get in fast.
http://pcpartpicker.com/p/1We5D Total:    $263.93
http://pcpartpicker.com/p/1We6R Total:    $303.93
http://pcpartpicker.com/p/1We8m Total:    $343.93

If you're willing to go USB drive, get a 3.0 as 3.0 USB is better, even in USB 2.0 slots.
http://pcpartpicker.com/p/1WeeH + http://www.newegg.com/Product/Product.aspx?Item=N82E16820141628