Most items had a sticker with a price on it. They used a price gun to apply the stickers. This was a job usually done by a teenage boy, while stocking the shelves. Some of those guys went really fast. You could hear the clicking of the price gun three aisles over.
The produce had no labels. The cashier had to know what it was, or ask the customer. They had a notebook with prices for all the produce. If it was priced by weight, she had to weigh it at the register. Yes, she. There was rarely a man on the register, unless it was a manager filling in.

Changing prices was a real pain - we stole a can of hair spray and used it to dissolve and then wipe off the old price.
In the video, you see that all the checkers are women and the script is clearly written for women. There’s a scene where a horde of women each with a full shopping cart is descending on the checker.
In ONE scene, you see two men shoppers. The other 100 shoppers shown are all women.
I remember the boys with the price-guns, now.