Recently tried to sell 2 items to CEX to which they have opened from sealed condition and tested to then tell me that there is a 10% reduction for being multiple items. Despite their terms and conditions stating: 20.2.5 " The value CeX offers for your Products may be reduced upon receipt depending on their condition or quantity." And email stating: " **Multiple quantities of the same product may be subject to discount. If a discount is applied, we will notify you via email before processing your order.**" Note that in both instances, reference is made to a revised offer being made on receipt, and before processing, not after the items have been opened and tested. Currently waiting to hear back before I pursue legal action against the company, but this is a clear breach of contract and of their own terms and conditions. If you're selling to CEX I would highly advise against it as they are scammers.