Can't be arsed reading 10 pages but ^^ this
Self employed also means 'does not know where the next job is coming from'. Therefore if your happy with the quote then what's the problem? Doesn't matter if the job takes 5 days or 5 mins .....if its dont right and that's what matters to you then smile and be happy.
Also totally agree with what Dan said.......I always buy utter shite from eBay and all sorts just to save 10 quid. Then I wonder why the bloody laminate won't fit together, the thread on the shitty tap strips, the crappy internals of something or another break after 5 mins and the light fittings stop working.
Admittedly I don't actually get a contractor to come and install any of this crap so it's probably actually my workmanship rather than the product but for the purposes of this conversation it's for the best that we blame the parts rather than the workman!