Thermaltake Dokker Black Mid Tower Case with built in HDD Hotswap Docking for 3.5/2.5" SATA w/o PSU
600W Corsair CMPSU-600CXv2 Builder Series, 80 PLUS, 80% Eff', EPS 12V, 120mm Fan, Single 12V Rail
Intel Core i5 2500K Unlocked, S1155, Sandy Bridge, Quad Core, 3.3GHz GPU 850Mhz 6MB Cache 95W Retail
Gigabyte GA-Z68A-D3, Intel Z68, S 1155, PCI-E 2.0 (x16), DDR3 1866/2133, SATA 3Gb/s, RAID, ATX
4GB (2x2GB) Corsair DDR3 XMS3 Classic, PC3-10666 (1333), Non-ECC Unbuffered, CAS 9-9-9-24, 1.50V
Pioneer DVR-S19LBK 24x DVD±R, 12x DVD±DL, DVD+RW x8/-RW x6, RAM x12, SATA, Black, Retail Labelflash
Please note, you will need to build this system yourself, which is quite easy with a little help from Google or Youtube.
Assuming you have a keyboard, mouse and monitor, you will need to add a HDD and OS to get going, and also a GFX card if you want to do some serious gaming.
However, the deal seems the cheapest 'combo' yet offered by scan for an Intel i5 2500K unlocked.
To qualify for free delivery, you need to sign up to hexus AV forums as listed for all SCAN deals.