That situation will need to be handled by the law. Let's say stores are required to accept cash. Are they allowed to charge more for someone who pays in cash? W

That situation will need to be handled by the law. Let's say stores are required to accept cash. Are they allowed to charge more for someone who pays in cash? Will they be required to provide change? If they run out of change, would they be subject to a fine? If stores wanted to weasel around this law, they could keep their supply of coins and dollar bills low so customers are forced to either leave or pay without getting change back.