It costs on average 2 cents because without legislative authority to round to closest the retailer must round down and eat up to 4 cents of difference.

Cash costs retailers money too. Safely transporting it to the bank, et cetera. For many, cash is more expensive than credit cards.

> Cash costs retailers money too. Safely transporting it to the bank, et cetera.

Yes, and now they won't have to incur that cost for pennies.

They can reprice items to minimize rounding