Hi mike,
That's correct 30% is the cost and yes on £200 it wouldn't pay a guys wages for a day, for seven hour day the minimum figure your aiming for is £280.
It's tricky to quantify an answer because you can make the figures to almost anything you want, but basically our guys for reg window cleaning do at least £35 p/h but average £40 p/h on regular cleaning work, other work is higher ie. Conservatory cleans, gutter clears etc...
From that I can take wages and generals running costs, fuel, servicing, wages, bonuses etc..
But that doesn't mean I have 70% profit, from this I have unit rent, advertising, vat,tax, mine and Mrs smudges wages, new equipment, unforeseen costs, etc....
There are so many ways to analyse income, potential income, and costs.
In short, if you employ and in six or seven hour day you can only hit £180 to £200 then the costs % wise will be a lot higher than someone turning out £300 a day
Hope this helps
Darran