I totally agree. In some cases thou I can do better then cost (thou I then lose money) so it must be something worth while (in my eyes).
One case thou, a gentlemen ask if I would sponsor both him and his “show” team which consisted of 5 other people. So I told him “since he/they had never gave me any business before and this would be our 1st dealing” that I would give them 20% off for starters and depending on how much work they would bring to me, I would then give better and better deals etc etc… Well that did not interest him at all as he wanted everything for free or not at all.