Until the most recent enshitification of capitalism as a whole, we used to buy 12-14 boxes of vending machine size Famous Amos chocolate chip cookies (2.5oz per). At a 42 count per box, that translated to just shy of 600 bags the last couple years.

We always ran out. Usually no later than 8:30, with kids still showing up afterwards.

Now that the price has increased by about 80%, were getting much cheaper but still full size Rice Krispie treats. Went overboard and got nearly 800 just in case.