Is this a a good deal/too good to be true?

Edit: Found their website: http://www.freshtechsolutions.co.uk/custom-built-computers/new-computers-chosen-by-us-for-you/intel-ivy-bridge-i5-3570k-gaming-pc-2tb-16gb-ddr3-gtx-680-2gb-galaxy-computer.html (even cheaper there)

£875 is about $1383

Considering I live in the uk this seem like an incredibly good deal and as a result it make me rather suspicious.

TBH I was set on building my own pc after seeing that you getter better preformance for your money, but my build is more expensive and seems less poweful than this. Too good to be true or a genuine bargain.

Here's the build I was peviously considering BTW:

Cooler Master HAF X-M Midi Tower Case - Black

MSI Z77A-GD55 Intel Z77 (Socket 1155) DDR3 Motherboard

Intel Core i5-3570K 3.40GHz (Ivybridge) Socket LGA1155 Processor (77W)

Corsair XMS3 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit

Gigabyte GeForce GTX 670 Windforce 3X 2048MB GDDR5 PCI-Express Graphics Card

Corsair Enthusiast Series TX750M High Performance 750W '80 Plus Bronze' Modular Power Supply (CP-9020003-UK)

Seagate Barracuda 7200RPM 1TB SATA 6Gb/s 64MB Cache - OEM (ST1000DM003)

Xigmatek Aegir SD128264 Double Layer H.D.T CPU Cooling System

The prebuild looks decent. The only downside seems to be the relatively low memory clock speed, but hardly a deal breaker unless you want to overclock a lot.