David , you can set your own company one up for £0.00 , you are in total control as you will be "admim" , if somebody post on the FB page something you don't like you can delete it .
The idea is that you post some photos of jobs you have done and a bit of info about the job etc, and keep it upto date.
Web sites are boring now, loads of different designs and styles , people know and understand FB and are familiar with the layout and style, if somebody goes onto your website they may only stay on it for a few seconds if they don't like the "look" of it, its best to re-direct them straight to your FB site IMHO