So either the cashier gets measley a penny or if this takes place in the US after pennies are no long printed/accepted and change is rounded off to the nearest 0 or 5, gets nothing.
You kidding me? Put it on eBay and exploit the fact that they aren't making them anymore. Some idiot will buy it for more than it's worth. It's a scheme that the Franklin Mint has exploited for years.
I assume the total includes sales tax... But, anyway, the silver half-dollar was discontinued a while after it was no longer all or mostly silver. Now the copper penny is discontinued a while after it is no longer all or mostly copper. Somewhere out there, CoinStar is making absolute bank.