Bumping, as I was talking about this show with a board member, and thought we had already covered the topic of "why didn't people on Supermarket Sweep raid a single aisle?"
Per a Lifetime briefing, it was because the categories for what constituted the limit of 5 were much broader than they appeared. All the big beef products were grouped together, but the poultry was considered separate, as was made obvious by how people behaved in the meat aisle. You COULD go into the deli section and grab the lunchmeat versions of each as well and not go over the limit, as they were considered separate. However, shampoo and conditioner? 5 total, not 5 shampoo and 5 conditioner. Hairspray? Separate from shampoo and conditioner. And we mentioned upthread that different brands of headache medicine counted as one item.
The nature of the briefing was "duplicates are solely up to the producer, so if I were you, I'd grab 5 of something, and try not to stay too close to it."
-Jason