I can't tell if the cooking grates are rusty but I am guessing they are. The cost depends on if you are a welder or if you have to pay someone to do it. Figure minimum $50/hr probably for the welder to make you new cooking grates. Along with materials, I would guess that is an easy $500 just for that but probably more....
Homemade Wood Smokehouse, Charmglow gasser, Smoke Hollow, UDS, dual chamber homemade grill
Certified MOINK Baller
UNLINED DRUM KING OF CHICAGO AREA
Scrap Iron Chef