I think the cab itself was like $50. I used a 1/4" sheet of plywood as opposed to the cardboard backboard it came with. So thats like an extra $12 for the wood. Give em the height and length, they do 2 cuts for free at home depot. All I had to do was bring it home and nail it on. If ya go that route, circle saw drill bits to cut holes make life easy. Optional... but i also cauked the entire thing before lining it w/ reflectic-x. Few hits w/ a staple gun, and the material isnt going anywhere