It can be more complex than that, sure for one person your comment makes sense

but if enough people use their time to go to the cheaper station further away, then they may force the closer garage to to reduce their price

either that or the close garage goes out of business and the one further away puts up the price because they can.

but still, it can be more complex

This is like saying that selling enough volume might make up for losing money on every unit. It's only complex until you do the math