 The Market Basket survey shows a year-to-year double-digit increase in the cost of beef and lemonade, while there's a couple of drops in the cost of chicken breast and potato salad. Retail price for two pounds of ground beef increased 11% to $12.77. Lemonade now $4.19, which is up 12% from last year. One survey found two exceptions to the price increases. Chickens down around 4%. Potato salad also about 4% less expensive than last year.