I don't think it's down to high prices - more a case of the type of properties that are worked in.
For example: my job this afternoon was 2 bedrooms, the price £ 143 !!
I charged my normal price per square metre, which is by no means extortianate - it's simply that this house was bloody huge.
And that's really my point. I'm lucky to live and work in an affluent area with some very exclusive estates containing multi million pound homes.
That's the lucky part, the skill is being able to deal with these people - offering a service that establishes trust and that makes price a secondary issue.
But I don't charge them any more than I would charge someone living in a 2 up 2 down - there's simply more carpet to physically clean than the average house.
The flip side to being able to earn that sort of money is the extra care that needs to be taken. I spent nearly an hour just setting up - dustsheets everywhere as they has expensive wood floors in the entrance hall and on the landing. I needed 75 foot of hose just to reach the bedrooms, which all had to be securely and safely tied off, so as not to cause any damage.
It all depends on what type of market you want to work in - my job on saturday is £ 280 for a 5 bedroom house - I'm not bragging and I don't consider myself to be expensive. But I do work in large properties and that's the type of client I market towards - I don't want to do 4 jobs a day, but each to their own.