Not even worthy of 1 star!!! Don't bother buying second hand through them, you will live to regret it and be out of pocket. Bought a laptop from them a year and a bit ago, have barely used it as was given a work laptop. Now it won't turn on at all. Dell suggested a coin cell battery change, I did that but that wasn't the issue it made no difference. I contacted CEX and because I changed a battery the warranty is void. They won't even look at it to see what went wrong even though this has NOTHING to do with whatever fault there is. £350 down the drain and now have to buy a NEW laptop!!