I briefly worked with a woman whose part-time job was to go through all the merchandise about to go on sale for a big promotion in a large chain department store (now merged into Macy’s years ago).
She would clip off the old prices, attach a new higher price and go on to the next item for hours.
Shoppers would excitedly see the $70 top that overnight used to be $45 and use a coupon deal to “save” money at $50.
Furniture stores have been doing that since forever.