On Wed, 16 Apr 2008 23:52:05 -0500, Sky >
wrote:

>Not that I
>know any better, but I 'bet' the grocery store keeps tabs and deducts
>the cost of the one 'unit' against its next delivery from the vendor.
>Same thing goes for any other products I'd imagine.

Grocery "chains" refund on single items, and then discard. A truck
load of milk on the other hand is another story.