Why is that then ben , Cause someone is cheaper it makes there work sh@te WHY would that be. When you do a freeby or a mates job do you lower your standards.
I know one old guy who charges a hundred quid a day no matter what its for and his work is excellent .
Because someone is happy making a couple of grand on this job doesnt give anyone the right to say he is sh@te because they would be charging far more
Exception that proves the rule.
I estimate the cost of staying registered, tools, transport etc. at about 20 quid a day. That leaves 80. Take of the various forms of tax and variable expenses and your are left with about 60 to take home. That is not a viable business. My dentist is semi-retired and only works a few half days a week because he loves his trade. I suspect he actually looses money on keeping working if he would add up all the costs at marketvalue.
A rough estimate of quality materials to do the job as speced by the op, gave me 4 to 4.5k. That leaves a max of grand labour for an awkward job. Not a snowflake's chance in hell he will get a reliable system for that price. I can think of half a dozen regs that are likely to be breached, and half of them will be. I bet I could condemn the installation the day after is is finished and hold it up at a tribunal.