I just had a conversation with a tradesman. I told him what I wanted doing and I asked for a price for 2 separate jobs. I asked many questions which seemed to annoy my wife. Anyway, I agreed to let him do one of the jobs he quoted for, but he said he would only do the 2 jobs or nothing. I told him no, which caused my wife to get angry because I may of offended him.
Just to add, the quote was vague and did not mention the kind of materials to be used.