 And while it costs nearly $7 to buy those same burgers at a fast food restaurant, you can make them for just $2.16 at home with all the typical burger fixings included. An American Farm Bureau estimate finds the July 4th grocery bill up 5% from a year ago. Christophorus recommends brewing your own iced tea and making your own potato salad instead of buying chips which are up nearly 3% compared to last year. Leo Vargas, WDBO.