How much do you think a stand alone dry cleaning business makes? Does anyone know about this business?

I have never thought much about it but there is a perfect location for one that I know of and several people have told me it would be perfect. Is there really any money in it? I figure I can ask the lady I go to how many customers she has. She does well. I don't think I would have any shortage of customers where I am thinking.

Any thoughts on this or anyone with insight into the industry beyond what they show in a youtube video would be great.