Hey Marc
Typically when I get an enquiry about emptying gutters I suggest a package price . eg. a 3 bed semi with small kitchen extension - emptying gutters, cleaning all pvc fascias sofffits and exterior guttering and cleaning windows & frames ( exterior ). c. €80.
No matter how carefull you are if your cleaning the pvc work with a wfp, some gunk or run off is going to hit the windows and you cant just ' rinse ' them off. From experience once a custy knows this they usually opt. for the package deal.
On average 7 out of ten go for this once price is around the 80 mark - afterall to empty the gutters alone will cost them c. €40 > € 50! and they are going to have nearly new pvc afterwards!!
Usually takes around an 1 hour and a bit and wfp with a hi / lo brush is great for cleaning pvc work.
Cheers
Ray