Nooooopppe!
That's almost double the normal cost.
4670k (not OC'd) - $230
Z87-PRO - $144
Total $374 or £223 pounds.
you'd basically be spending double the normal price for an overclocked chip which is free to do yourself. Just do the research.
Although I'm assuming you're buying from europe? If so I don't know about what the prices are there compared to the US.