It is pricey, but there are a lot of parts there. Plus, in addition to all the pulleys and brackets you get an alternator, power steering pump, water pump, and AC compressor.
I think it looks really sweet. I'm getting ready to install a Classic Auto Air AC system, and the pulley and AC mounting bracket that came with it look like crap. I can't see putting those parts on my Cuda. I'd rather use all the other parts in conjunction with the serpentine set-up. Since the AC compressor mounts in a different location, there is no sense installing the Classic system then installing the serpentine set-up later and having to redo all the hoses.