A bill now before the Illinois Senate would help ensure that when supermarkets put products on sale, customers get the discount.
The bill was passed by the House and was sponsored by Representative Natalie Manley of Joliet.
Manley told the story of a woman ahead of her in the checkout line at a store, who was charged the regular price for an item even though it was on sale.
Manley says sometimes customers don't check their receipts to make sure they got the discounts for items on sale.
"I don't know about you, but by the time I'm leaving the grocery store, I want to just get out of there. So, she didn't get her discount, and so that started me thinking that I would like to see it on the screen as my item is being scanned," said Manley.
Manley's bill would require supermarkets to show both the regular and sale prices of items as they are scanned or rung up, so customers can immediately see if they are getting discounts.