We ask you a few questions when you call us for a free quote for your cleaning requirements. The rough estimate is based on the answers to these questions. We need to know the number of mattresses, their sizes, what kind of stains they have and a few other details to give you a rough estimate for the service. However, the final quote is given to you once our mattress cleaners visit your place and inspect the mattresses to be cleaned. But you can stay assured that most of the times it is equivalent to the rough estimate and if not then there will be only a slight variation.