sounds about right mate to be honest (pricing wise)
try explaining to the customer that there is prob more glass and pvc on the con than the whole house.
takes longer on some cons than whole houses!
i know some wc that wont do the con at all, daft really but some customers just wont pay it!
we do a service called complete con valet - do about 2 a week.
involves cleaning the roof,all pvc and glass. price from £40 - £150 +