Ehh, I used to work retail and do signage for my department. The amount of time spent on signage in a day wouldn't have noticeably changed the bottom line. The extra 30 minutes we would have gained per department would have been spent on cleaning and restocking. When one person staffs your department at open, it's not like you can go to zero because they don't need to change price tags.

Fucking the customer and protecting them against mislabeled prices are the real wins there.