last year i put all my front only jobs up by £3, i got to say it feels good.
I explained the cost of cleaning their windows has gone up over the years so my prices must reflect if i am to continue offering a quality service. If you are a wash and run guy you may not get away with huge price increases (not that mine was) but if you take the time to do a quality job i find they don't mind.
Some years ago, when i trad cleaned. I had this particular old lass in a bungalow. Now i used to (still do) pride myself on a quick job whilst maintaining quality, as lets face it, its to make money not a hobby.
Every time i cleaned windows, she would come outside and check every window and sills, whilst i was cleaning the neighbours (before i would collect on both). Everytime i would ask if she wasnt happy with them. Her reasoning was, that i did them so quickly i couldnt be doing a good job. She never found anything to moan at. I even started to clean hers slowly to make her feel better. I did so for about 3 cleans and then i got tired of messing around because in her head, a fast job cannot be a quality job. She never complained other than me being quick. So i told her to get another slower window cleaner (who could leave streaks etc for being too slow).
I picked up a new customer the other week. The last one hadnt been for ages. So i treated it like a new clean and frames needed use of ibik. So it took a little longer than normal. The chap started talking about previous cleaner saying how quick he was and that they timed him and he was just over 3mins to clean house. (Large basic windows, 6 at from and 3 at rear).
I explained that once these were upto scratch, it wouldnt take me long either to clean them. After we had finished talking, he excepted the fact that i (all on wfp) had invested alot of money in new innovations to allow us (window cleaners) to clean faster but to keep high quality at the same time. Difference i told him from him using an old hand drill for his wood work or using a power tool, which speeds his work up and actually makes it more quality than before. He got the point!
So regardless of fast jobs or slow workers, if your work is quality, then by all means put prices up to reflect this and the investment you make.