Thanks all! I have contacted a realator in the area who is going to work with me on this..
She gave similar answers to the same question I posted in another forum.. and I'm hopeful this will be a great relationship!
We own a rental property in Surprise and have helped many others find rentals throughout the valley, the only legitimate charge for each tenant over the age of 18 that I have seen is an application/credit check fee. The monthly price of the rental itself should not vary and if it does, I would keep looking!