I was looking to get my serpentine belt changed and i figured i might as well get some bbk underdrive pulleys while they are changing all of that. So i called a local shop and they offered to install bbk underdrive pulleys and change my serpentine belt for $100. Is $100 a fair price for labor?

 

I'd say so.

 

$100 sounds cheap, but then again I would call around and ask to get a better idea.