Yes I have had that happen. More than once. I have a couple of ideas. First sometimes the online sales are different than the store sales. Did you have a coupon listed in the coupon box when you added your items? It will give you the "real" price and then take the coupon off instead of the sale price. My third idea is that they just have a screw up in their programming like in the first few hours of a sale of the last few hours of a sale, the site does freaky things.