I want to use the Smith Registration Pro module to sell multiple subscription options (like a bronze, silver and gold memberships). Each subscription needs to be for different lengths of time and have access to different areas of the site....and a user can only purchase one of them.
Is it was possible?
Yes the Smith Registration Pro module can be configured for multiple subscription options like a bronze, silver and gold memberships. Additionally, you can configure the module so each subscription has different recurring billing options configured for different lengths of time and assign different dnn roles for each membership level that give access to different areas of your dnn portal.
Please see the following forum post that explains how to setup multi-level subscriptions: