The block of apartments I was referring to  is pretty well to do,  they have had a bad experience with the last shiner. 
I have no idea what he charged but I know the residents get an input into all work carried out. 
I got the job because I did 3 jobs on their guttering,  turned up when I said I would and hence built up a good relationship with residents and management company 
I am not nieve  about commercial but in my experience if people like you,  you are on a winner. 
I have pubs,  motels etc that keep me on because I am reliable. 
I don't know why they like me though,  I drive everyone else mad,  ha ha.