> How can bags be mistaken for cases when negotiating a deal? The price would be different by an order of magnitude.
These kinds of confusions happen regularly, lol. Back a decade ago when I was working in pubs, colleague ordered what he thought would be one pack of paper towels - in the order form, he chose the wrong column to place the "1" in. Next day a shipping company showed up with a pallet of paper towels. Boss wasn't amused too much, but not because of the money, rather because we lacked the space to store a fucking pallet of paper towels. We ended up selling half of them to patrons at cost and managed to squeeze the rest wherever we could - I would not be surprised if someone today would still find a random roll somewhere and wonder where it came from.
In another job at a supermarket, this happened somewhat weekly. Didn't really matter unless it were really slow-moving or perishable goods, but it rarely happened in the latter case and in the former case stuff could also simply be sent back to the central warehouse.