When I was building my computer, the DVD burners were cheap and fairly interchangable. I bought a 24x Sony one for £12:
http://www.amazon.co.uk/Sony-AD-5260S-0 ... pd_cp_ce_2
The blu-ray writers seem to be kicking around £70 on Amazon
http://www.amazon.co.uk/Sony-AD-5260S-0 ... pd_cp_ce_2
The blu-ray writers seem to be kicking around £70 on Amazon