No Robert, i am saying that it is ridiculous that any professional can not give a rough guide price over the phone for domestic work. Yes their are exceptions, but you should be able to give an estimate over the phone if you are experienced for the vast majority of domestic work.
The only reason a professional carpet cleaner wants to get to carry out an on site survey is to get a price that they know they have no chance of getting over the phone.
I am not saying anything is wrong with that as long as the customer is not taken the pee out of, like some companys i know do, but lets be honest about the reasons and not hide behind all this " i offer a superior service, so therefore i need to quote on site" nonsense.
Their is only one type of service and that is a superior service, whether you quote by phone, email or on site.