“30 and 180 days after the underlying good or service is provided or received” + “But once you have established that record of sales, they buy future inventory.”

Means very different for products with a limited shelf life. The cost to “replace items that are selling” doesn’t just cover the risk, it also covers the items actively sitting on the shelves. A store is only buying new items after the old items have sold, so that continues indefinitely. A store is thus better off of if an item stops selling in 1 year than 1 day, as the replacement item is also subsidized.