My first shop front and I have been asked by my regular house customer to clean there shop window. They are opening up a new shop that has been empty for about six months, I went and had a look today and it's a double aspect front, glass door, windows either side, approx size 6 x 8ft either side, maybe slightly bigger, I think they want in and out and probably every two weeks, anyone have idea on charging for that, I am trad not WFP