when i turned up at an area i saw someone cleaning a massive house with really small windows(224 to be exact)as i used to do this wfp for £20 and took me about 40 minutes.they cancelled me to save money,so i know he must be doing it for less.he looked at me as i arrived and got my gear out and so i called to him that will take you ages mate.during this time i did 8 houses totaling £66 as he just finished 1house for less than £20 in 1 and a half hours. it just shows the difference with wfp and trad.