Thank you Daniel for reply to my post.
I understand your point of veiew, but not every(for example) 3 bed house is the same. Some of them are really filthy with dirty bathrooms or kitchens and has a lot of limescale and it takes much more time to clean it up. One 3 bed house takes 4 hours for 2 men but some of them 5hours, 6 or even longer. So if the price will be the same for every same number of rooms house/flat and i will be have to spend much more time on filthy one there is no chance to earn sensible money. That way to make a quote is fine if you work for your own, but not if u have to pay to cleaners to do the job right. Filthy house=no profit.
Thanks.