Maybe not. Dropping the prices on the wrapped sandwiches after lunch hour would be useful to clear out the unsold inventory.

This could also be applied to baked goods, and with time, even expiring produce. It would be something to benefit both the consumer and the store!

Grocers do discount short-dated products. Look for the sticker that says "manager's special".

In my grocery store they give you 50% discount after 8pm. No need to change price labels.

How do people know?

> In case you're not being facetious: the price would change overnight not during business hours.

I'm not. Parent said "minute by minute", that's why I asked. Overnight is what I was assuming too, until I read that comment. Couldn't tell if it was a joke or serious.