Originally wanted a smallish sub $500 gaming/general purpose PC which was perfectly attainable, but then got temped by upgrades (SSD, Blu-Ray, etc) during and after the build.
I used the smallest budget case I could find. Smaller cases get more expensive. 6.89" x 13.86" x 15.26" (W x H x D) (bezel included) = 1457in3 or 23,880cm3
Price as shown $850. Includes 7.5 to 8% Ca sales tax, shipping, promos and rebates. Could have saved $50-$100 more if I had gotten some items during the November 2013 sales events. Purchased most stuff in Oct 2013. Price with no upgrades and no OS, $477
Most items bought from Microcenter, but used Amazon, Newegg and eBay as well.
See more accurate pricing, product specs, benchmarks, etc. here:
Upgrades from sub $500 price to $850 price include:
-256gb SSD and cables/screws
-CPU cooler, thermal paste, 2 pwm fans & splitter cable
-2 pwm case fans and splitter cable
-Windows 7 Pro
3D Mark Firestrike >5100 (GPU overclocked)