I worked for Blockbuster for a couple of months, way before they sold preowned games in a small high street store. It was super slack, there was no actual store manager, just an area manager who wasn't paid enough to give a shit about the other stores he had to manage when he also was given his own store to look after at the same time. Also he was my mate and hooked me up with the job anyway.
We would smoke in the back room where all the videos were stored, set up one of the Saturn or PlayStation consoles they rented to play on and take home whatever tapes or games we wanted. I found there was so many classic films in the back we didn't know we had because the actual case for the tape would be stolen not long after that movie was played on TV and someone made a home recording of it. First time on TV, that case is going to be missing in a week.
Easy job, but shit money and hours.