I only use wfp now, but if I was using ladders, then my minimum charge would be higher.
When I worked out a business plan, I took in all the factors that can and do affect my business. (weather-holidays-cancellations-illness etc etc) I then worked out my various costs and I came to the conclusion that I would need to earn £30 per hour for the amount of hours I am willing to work, I know that on average I can clean 3 houses per hour, so my minimum charge had to be £10.
If I went back to ladders I would find that I can only do a percentage of the work I am currently doing, so my minimum charge would have to increase.
Personally I think that ladder users should command a higher fee than wfp users, just because of the harder work involved, never mind the danger that they face.
A lot of cleaners around the country are reading this and thinking, I wish I could charge that much, but there's no way I can.
I can guarantee you, that if 100 people called for a quote, and you quoted these figures, a certain percentage would be willing to pay this rate.
For example when I first started carpet cleaning, I worked as a canvassers for a very expensive carpet cleaning company, every quote I gave did not result in a sale, but a certain percentage did.
What I sold, was not that we clean carpets at a very expensive rate, but rather we offer an excellent service and aftercare package, the same applies to window cleaning, where is it written that a window cleaners must charge a lower rate than any other tradesman.
If your customers uses a taxi or bus, then they have to pay a minimum charge, if they change their mind and get off earlier, they don't get a refund.
They are all willing to pay a repair man a minimum charge of £20 - £30 or £50 just for them to come to their house, and have a look at the broken appliance, repairing it incurs more costs, so why can't you charge a smaller amount and you are actually doing the work.
So the next time someone asks you for a quote, tell them that you minimum charge is £10 or higher, if they look shocked, then explain that the service you offer is excellent and well worth the money, I mean, who going to pay for a crap job being carried out.
If they don't want to pay this then they can move on because you will get customers who will pay you this rate.
Why work harder, when you can work smarter.