 Because if you notice the price discrepancy, you've got a couple of choices, right? If you're doing self-checkout, you've got to go to customer service. You've got to have them handle it. And then you're there for the next half hour if you're lucky. If you're in a normal checkout and you have an employee there, well, then you've got to do a price check, which means you're holding up the entire line. You have to wait for somebody to run back, verify the prices, run back up front, change it all, and nobody wants to be that person or wait or do it. So these assume, ah, it's $0.10, whatever, I'm just going to move along.