[Jason Atwell]

Just been looking through the net, and came across a canadian firms website which has a facility to (estimate your own window cleaning cost) Which has to then be agreed by the firm when they come to see your property.

Quite a good idea if your company covers a large area, at least the customers knows what the min price would be!

Have a look!
www.torontoclearview.com

[russ_clark]

I operate a 'photoquote' system via my website
I can give a pretty good estimate based on the photos sent to me.
I obviously have to view the property to give a 100% accurate quote but it gives the customer a good idea of cost so gets rid of those wanting the job done for nothing. 
Russ

[Majestic]

This is a UK one


http://www.smashingwindows.com/pricing.asp