The bakery is at the front of the store to lure you in with its fresh-baked smell. Items that are sold at the ends of the aisles aren't necessarily the biggest bargains. Watch the cashier carefully. They may mistakenly input the wrong sale price. Examine your receipt carefully before leaving the store.
Scanners often read the wrong or non-sale price.
Make a list before you go, and try not to shop more than once a week. The more you go, the more likely you are to buy things you don't really need. Making repeated trips to the store can also waste time. Be sure to look at the unit price to determine how much you are spending per ounce or pound. Bring a calculator if you need one.