TBAILEY.
I just had mine replaced about two months ago for the second time in three years. I had the dealer replace mine. The only thing that the tech said was that the boot was really hard to get it in the right way, so as it doesn't leak. I think it was about two hundred dollars to install. I had the tractor serviced at the same time so i don't remember the cost on the brake boots. It took the tech about three hours to replce the boots on both sides.
Rob