I wonder what the scheme is here though; Why overprice something by ~50% and add a voucher for the same amount off; is it some sort of anti-deal tracking thing?
It always puts me off from buying something expensive because I wonder if somehow I could end up worse off (in terms of returns, or warranty or something) because I bought something that was X but only paid Y due to the voucher.
Realistically, I probably wouldn't buy a high-end computing product from Amazon anyway, unless is was notably cheaper than the specialists I'd normally buy from. Something like a £2000+ mini PC isn't the sort of thing the typical UK PC retailers I buy from would stock.