Do you live in the UK? Keep in mind that we in the UK have absurd VAT.
i5 4670k - with stock cooler
ASRock Z87 Extreme3
G.skill X series 8GB 4x2
Seagate barracuda 1TB 7200rpm
ASUS R9 280x DirectCU II
Corsair CX 500w 80+ Bronze
Lite-on iHAS124 optical Drive
£640 Without case, OS or display.
I can adjust it to make it fit budget. Others that know about motherboards e.g. more than myself will come in to suggest other components. A work in progress.