How do I get paid for my services?

I am not able to find anything on the site about charging for my services, what I am being charged to use the http://Rover.com website, or how I am paid for services. There are no dog walkers in my neighborhood and a number of people looking for someone. I like the idea of being attached to a national company with a solid reputation, but I need the facts to make up my mind. Once I have this info I will be happy to provide references from the people who I work with now. Best, Roxan