with respect, the op was quibbling at £400 which in my mind is more than resonable.
With respect, is £400 reasonable because that is what you would charge someone? Is it reasonable because of the overheads and deeming part of that a reasonable wage for a qualified man? Or is it reasonable because "it's the going rate"?
Your attack on the original poster mocking his socialist leanings as a comminist doesn't do much for your credibility, in any argument.
everyone has overheads to take care of and there is always a very rough rule of thumb regarding what trades earn in there respective areas. usually based on hour/day rates.
regarding my so called attack on the op, I shouldn't be so sensitive if I was you, he is doing a resonable enough job fending for himself, although he has been put down somewhat several times for his comments he has responded with some resonable arguments and a fair ammount of banter in the opposite direction.