This looks like a fab price for this complete setup! Valid until 31/12/2014. The monitor alone is retailing for around £120 from other websites making the tower just £220 not to mention the keyboard & mouse in this bundle.
Intel Core i5-4440s Quad Core Processor
4GB DDR3 RAM
Includes Keyboard & Mouse
12 Month Lenovo OnSite Warranty
Dual Operating System - Windows 7 Pro 64 bit installed with Windows 8 Pro License and System Restore included!
Lenovo ThinkVision 23" Monitor
Terms and Conditions and details of how to claim your £100 cashback can be found at:-https://lenovo-offers.com/uk/en/business/
Other packages also available with AMD & Core i3 processors:-http://www.saveonlaptops.co.uk/products/area/deskcash