. >> reporter: for meat, fish, poultry and eggs, discount pricers raise prices at a higher rate than other grocers. the same for dairy. we tracked dairy at a single dollar general store in texas, over a year the prices shot up 20%. dollar general said we have been forced to pass along price increases though not of the magnitude suggested by numerator. 58dy didn't respond. still discounters are cheap than most other supermarkets that can only jack up prices so high. >> you can't raise prices if people are going to shift away from you except at a dollar general or aldis, people aren't shifting away, they'reres despite higher prices. >> reporter: researchers found cash strap consumers are turning to less healthy options like dollar menus at fast food restaurants. >> duncan: i can believe that. carter evans for us tonight. now to hurricane fiona, gaining strength as it moves across the atlantic. the category 4 storm with 130-mile-per-hour winds is expected to continue to strengthen as it pass west of bermuda by friday and eventually make landfall in canada this weekend. in puerto rico th