88717 Pay Per View Project

I am developing a website that will display a league of horse racing tipsters. The site needs a members area for tipsters to sign up and select tips each day from a database of the days racing. These results will then be displayed to the general public. The main area for the visitors will be a pay per view section where they can pay money into a virtual wallet and purchase tips from the tipsters based on their performance. This is the main area we need assistance with. Developing the members area and more importantly the pay per view area where people purchase credits to spend on the site.