I purchased four bags of Nature Valley Honey Nut Clusters at Food Lion on Sunday. The shelf tag showed they were on sale for 2/$5. I used four $1.60/1 Vocalpoint coupons bringing the price down to $.90 each. When I returned home and started to scan my shopping trip (as part of the Nielsen Home Scan Program), I realized I was charged $3.79 a bag.
I went back to Food Lion the next day with my receipt and the manager happily refunded the difference. In addition, the manager gave me $3.79 (plus tax) because their scanner rang the item up incorrectly. Just another reason to check your receipts.