[djrogers]

> When the supermarket offers a discount, they don't then turn to their providers and say "since we sold this at a discount, we're going to pay you less for it".

No, they negotiate those things ahead of time. It does t matter though, as there’s a huge difference between an item that is infinitely reproducible and a commodity that has per-unit production costs.

[wyattpeak]

Nah, I disagree with you there. I don't think the nature of the product being sold affects my opinion or expectation of whether or not producers are expected to shoulder the cost of a discount given by a middleman.

For the record, I also disagree with your blanket claim that supermarket discounts are negotiated ahead of time. Some are.