Change this to one penny, one cent, or whatever the lowest equivalent is where you are from.
It's a no win situation. When you pay for something in a shop/store and the total comes to say $19.99. You pay with a $20 bill. Then what do you do? you have two options, both are crappy.
A. Stand there like a nimrod waiting for your one cent change. Like "I'm gonna gets the cash coming to me. I gots big plans for this penny."
or B: Even worse, just wave it off like a big hot shot that doesn't need the money. "Hey, Mr Shop assistant, you keep the change. I know you need it more than me. Go out and buy yourself something nice. On me."
Both options suck. Now I know lots of smaller shops have put in the "leave a penny, take a penny" tray, but what do you do when that's not an option? Say in a department store. Just curious because there doesn't seem to be a "better" option in this situation.
One could just adjust prices to avoid the issue or do some level of rounding.