I've worked for minimum wage (£3.30 ph and then £4.75ph), now I'm moving on up to the big bucks. Everyone starts somewhere!
As for the game people, I find its a mix, some are knowledgable some aren't. I kind of expected it really, like Ashley said (agreeing with Ashley?! I feel sick):
Its customer assistants. So really they need to be able to serve the customer. Half the time, the customers won't be part of the gaming culture anyway so having a large knowledge would be irrelevant!