Hi Steve
With pricing, firstly you need to see what the local cleaners are charging, if they are charging x amount, don't charge less because you think you will get more work, all you will pick up are the ones they have dropped off their round and you will be a busy cleaner earning nothing, unlike other businesses windys very rarely complete against each other in the domestic market.
Next look at what you will be doing, for instance you will be cleaning the glass, but look at the other small things that might get you the job, for instance when I give my price for a house and they seem to waver, I point out that I clean all the glass all the frames and sills, I wash down the front and back doors, the garage doors if they are white, I even clean the facial boards if they are really dirty or covered in green moss, I also clean low level guttering and I even call them to night before to let them know, that way they can leave the side gate open and leave the money in a safe place.
When you list all of this, the price you have quoted looks to be the deal of the century.
I also charge extra for the 1st clean, if they query this I just point out that the 1st clean will take longer than the maintenance ones.
The best way I have found when first quoting a figure is to say that the price is £22 for the 1st clean and then drops to £12 per month thereafter.
Starting off and getting new work is easiler than you will think, for a start ask everyone you know, neighbours, family, friends, ex work collagues, people down the local pub or club to spread the word that you are now a window cleaner and looking for work.
as has been said get some leaflets printed and drop them off locally to you, follow this up with a door knock, you will soon start to see the work coming in.
also use Ecover from your local supermarket, it is better than fairy, gg3, gg4 or some of the other chemicals that cleaners use and it covers up the mistakes a new cleaner will make when they are learning how to clean glass with a squeegie.
I would get some Oil flo which removes tape and a lot of residues from glass and frames quickly and easily and you can also try Docktor Powder, this is very good on dirty marked frames.