This Turkish bus driver knows that he can earn a side income by selling drinks in the bus. But he didn’t realize that the people in the bus paid €3,20 for a bottle of water at the airport and therefore wouldn’t mind to pay more than €0,50 for one bottle of water. He is the only one who sells the water and if people really need it they will pay for it.
You might think that people will never pay a higher price for your service. That it is not reasonable to ask higher prices.
The reality is that those are your limiting beliefs. If your product or service is valuable and really an answer for the customers problem, it is a no brainer. Get rid of your limiting beliefs and ask the price you deserve.