its always hard to quote from pictures but that looks fairly straight forward and also depending on how much debri there is blocked downpipes etc. but lets say its a general build up with no blockages etc i would say around the 200-250 mark, maybe with a fair discount for any future cleans, its fairly high up and gutter cleaning is harder work so thats what i would go for..also its not like they have them 3-4 times a year probably once a year if that.
paul