I really do wonder about some businesses. Money laundering is my explanation for many of them, like the gas station that charges over a dollar more per gallon than it's neighbors, or the restaurant that is open every day but only has customers one night/week. If there's another reason for them to be like that I can't figure it out.
There was a gas station near where I worked several years ago. Their gas was about 50 cents over the competition and I hardly saw anyone there getting gas. There were a number of people that went into the "quickie mart" section to get something. The police raided it one night and busted a thriving drug business.