How much will is cost to get 2 floorboards replaced?

I already have the 2 floorboards, how much will it be to get some guy to replace it?How much will is cost to get 2 floorboards replaced?Shouldn't cost anymore than 50.00How much will is cost to get 2 floorboards replaced?guess the flooring and sound proofing is removed? might not be much at a muffler shop.