WHEN you meen faicia does that include gutters etc , go by norm window clean rate say 20 hr then double it , also depends on how dirty it is , if there is 2 of you 80 per hr , i have come unstuck under pricing , do a sample see hpw long it takes , it has been said before dont under value yourself , also point out it can be dangeruos, use stand offs , someone footing , hope this helps bob.