Mark-up: 40 percent
Prepared foods are so expensive because of the labor and kitchen space it takes to prepare them, according to Amanda Yates, who works for Foodonthetable.com, a website that integrates family food preferences with the sale items at local grocery stores. Instead of buying pre-made salads or seasoned salmon steaks, make them at home for one-third the cost, Yates suggests. WalletPop also found that most pre-cut fruits and vegetables have a 40 percent markup at grocery stores.
(AP Photo/Larry Crowe)