Some good points there. You can't blame people for trying to beat you down though, it's often worth a try and just because you won't budge it doesn't mean everyone won't. When people ask me that I say well yes I could knock a few quid off if I use cheaper or lower spec. materials, or if I get one of my lads to do the bits I would usually do myself, and of course there would be no guarantee in either case etc etc. They soon get the message that by cutting down the price they are cutting down on the quality and they invariably agree to the first quote.