Did they pay him for the product before or after it was sold? I never really knew which way it went, but assumed that since the entire thing, except checkout, was handled by the rep, Publix never really owed the product, they just sold it as if it were on consignment.

They paid him before. But really big stores would buy the whole thing on credit.

They definitely owned the product, while it was on their shelves.

Even if a vendor has a buyback guarantee for expired product, if someone were to break in and steal all the product, its the store who is liable not the vendor.