This pretty much only happen when you buy something at checkout. Your printed bill says total comes to CAD 5.12, you pay CAD 5.10 in cash. If you do a return, t

This pretty much only happen when you buy something at checkout. Your printed bill says total comes to CAD 5.12, you pay CAD 5.10 in cash. If you do a return, they will return in cash as well, and pay you CAD 5.10, because of the above rules.