My charges start at £6 and top off at £20 i cant charge anymore than that, infact its only cos the house has 24 windows i can charge £20 for it, i know the person is greatful that im there doing it too so when the time comes im sure she wont say no if i put it up to £25. The rest in between are at £7, £8, £10, £12 and £15. Its hard to charge mental money in NI.