An interesting side note: Forbes magazine had an article a couple of decades ago on a study comparing McDonalds franchises which found that those who paid more

An interesting side note: Forbes magazine had an article a couple of decades ago on a study comparing McDonalds franchises which found that those who paid more than minimum wage were more profitable than those that paid minimum wage (and yes the study did control for socio-economic status of the location: it was an apples to apples comparison).