That would not be prohibited, but it might not be a good business idea due to customer resistance. Classic economic theory on pricing lists commonly used optio

That would not be prohibited, but it might not be a good business idea due to customer resistance. Classic economic theory on pricing lists commonly used options that essentially try to achieve that but with various indirect methods: 1. provide discounts to various demographics that are known afford less - e.g. students, seniors, etc. 2. provide different prices at times or places that have customers with different average ability to pay - e.g. geographic discrimination, and also discounts provided at times when traditionally employed people can't take them. 3. simple "inconvenient obstacles" e.g. coupon schemes, intentionally created queues, etc where people who accept the inconvenience get a better price, and people who can afford to pay more simply don't bother and pay. 4. Direct, prolonged, serious personal bargaining and haggling, resulting in an individually negotiated price that depends on your willingness to pay. But IMHO people would not like if it was explicitly based on their ability to pay, so companies try to disguise that.