CeX is an amazing place to work, it may be different in the other CeX stores but the one I was in was just worth it. You learn more as you progress and the people there are really easy to socialize and work with. Would even love to work there again, no doubt. It could be really busy on the weekends and you have to be a fast worker and really knowledgeable in technology, games and media.
Pay, co-workers, experience