I was a gas pump attendant at one time (although at $2.10 an hour, I think) and eventually a gas station manager. There was a thing we called “hanging the pump” where the pumper gets a customer who comes in and only gets $2 worth of gas, and he leaves that on the pump so he can pocket $2 from the next customer. You’d be surprised at how many people come in and get vanishingly small amounts of gas - some of them coming in multiple times in a single night.
Statistically, the less a person earns, the more likely they are to commit petty crime. And the greater the social differences between two individuals, the more tempted they will be to exploit each other. Gas station attendants - who are barely getting by - are in constant contact with people much better off than they are… not everyone is strong enough to resist!
Bingbingbing We have a winner! 
