Is it? That's a pretty good deal. don't trust ebay, but if you do, I would jump on that quickly.
EDIT:
I lied. If you were to buy that seprately, you would save 8 pounds, including shipping. You current setup is in dying need up an upgrade.
PCPartPicker part list /
Price breakdown by merchant
CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor (£171.38 @ CCL Computers)
Motherboard: Asus H81M-PLUS Micro ATX LGA1150 Motherboard (£49.69 @ Misco UK)
Total: £221.07
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-12-27 18:11 GMT+0000