So I worked at 2 different gas stations overnight while going to school. Made a little more than minimum wage at the time. Over the course of those 2 years, I managed to take enough cash to pay my rent and put 5k down on a car. The first job didn't ever install cameras and the manager really never caught on to anything being off. The voids never showed up on the daily reports until about a month before I left. They were operating on an ancient POS system. The second job, no one had specific codes to use to "drop" money so as long as you entered in the amount you were "dropping", your numbers were never off. We had some jerks working there so I never felt bad. It was a 5 million dollar store and paid us in peanuts. I stopped when we got specific codes to use when we dropped money. I still don't feel bad.