If you want to work as an individual, and not be pricing yourself out of a job, then it is best to find out what people who do this as individuals in the area in which you would like to clean are already charging for a similar service that you will be providing. The prices will vary depending on where you will want to do your work.
There may be some sort of national average as far as the wages that are paid per hour to someone that does cleaning. But, charging in the range of the average prices might mean nothing to where you will be doing the work. It's best to get an idea of what you can charge based upon hearing it from the "horses mouth" from people in the know around where you might like to work.
The prices quoted above might be for someone who does the cleaning who is working for a company that sends out cleaners to people. The company that employs the cleaners might be charging the customer somewhere in the range of the prices that are quoted above. But, the person that does the actual cleaning is not going to get those kinds of wages.
Most will not go into a home for less than $75 per cleaning.
The poster above does not provide any qualifying information as to what $75.00 per cleaning constitutes.