for that price im sure you will find someone who will do it for you m8t
200% seems to be the desired amount by self employed window cleaning canvassers some will cherry coat the deal abit but it is what it is , so you get half your money back right away ie the 100% but on average you lose say 50% all you gota do is clean it 2-3 more times to break even with your running costs. so its more like paying 300 or 400 % if you are happy with that then you will have no problem finding a canvasser and im sure you will be the canvassers number one customer!