we can all do gardening.... but a lot hire gardeners....
we can all paint rooms, but we hire decorators.
we can clean our own wheelie bins, but we pay to have them cleaned.
we can wash our own cars, but we take them to... and pay a carwash
But none of the above charge or earn the amount window cleaners do.
If any of the above was charging £40 or more an hour then the story would be different.
Glyn,
Maybe I was too cryptic in my post....
If you aim to win and keep customers with this mystical new thing called WFP.....then you're on to a loser.
The internet is wonderful tool for everybody! (including your customers) You cant keep this WFP thing a 'secret' and hope to prosper.
What I'm saying is ADD VALUE to your service - you are insured. You are trained. You are recognised by trade organisations....
What if that customer who was using a WFP and Hozelock pump dropped it on a neighbours car!!!!!
Not a problem for you!...you're fully insured and covered 
What about the H&S aspect of your work (you're trained) and a "competent person" to issue risk assessments 
What about the the hazards associated with with Working at Height?...are they aware?
Are they covered under their 'home policy'
ADD VALUE my friend 
If you dont have the skills/knowledge.........get them pronto!
As Gazza mentioned, we can all do these jobs, but do we 'want to'....do we feel able to meet the challenges of performing these tasks?
Dont treat WFP as some 'big secret' nobody else should know about....rather, develop your skills to 'use' the equipment in a way that is professional and trustworhty with "ADDED VALUE"
Do you see what I'm saying? 
This "add value" stuff is true with suppliers too. I've bought stuff before and had no backup at all if something didn't work as well as I needed it too. Other times I've bought stuff and been able to get things sorted out quickly if things haven't worked out. That's an area where Glyn and Omnipole score well as I've needed a swift remedy a few times and been able to drive up there and get it sorted on the day. A lot of (cheaper?) suppliers can't or won't offer that kind of service.
Ooops!!
I didnt realise Glyn was a supplier of equipment.
I thought he was coming at things from the angle of a window cleaner who was upset a
'domestic' customer could buy all the bits and bobs to set up his own unit for a few pounds and we should keep this WFP thing a secret!!!
I think Glyn is aware with posts (such as Harris Pole and L5) we're all thinking about ways to save a few quid.
From a supplier viewpoint - Personally, I like Alex Gardiners approach:
1. You can talk to the man himself.
2. Problems are resolved speedily
3. Easy to ask for advice
4. Cutting edge innovations (SL-2 or Thermobore anyone ?)
5.
REAL contact - with a phone number!!!
6. A nice easy website
In my book, thats built-in
ADDED VALUEWhen suppliers start selling
'Home' devices and
'Commercial' devices aimed at doing away with window cleaners altogether....then I think we need to sit up and ask ourselves who's interest are they looking out for exactly?
...Ionics do a nice line in 'domestic' and 'commercial' systems for those that are interested