Unfair Contracts
an EULA is a form of contract and in the UK cannot be unfair.
http://www.oft.gov.uk/advice_and_resources/resource_base/legal/unfair-terms/what-is-unfair
I am sure if you buy a bit of software and it does not do what it should, and you cannot get it replaced or refunded ( which retailers are oblidged to do by law if the disk is faulty) then a quick pettion to the small claim court will have your money back.