Normally it was like $6 per bag, so she got 2 bags for $6, plus she had a manufacturers coupon
for 1 dollar off for this particular item. In fact, each thing they got in the store
had a similar situation. If it wasn't on sale, she had a coupon. If she didn't have a coupon, she bought the lowest priced item on the shelf, bypassing brand names.
She sent another person out with the same list of things to get, but told them to "shop" without concern to price.