The cost of you PRO plan is beyond unacceptable
I am currently spending ~$650/yr on subscriptions on your site, and being able to read articles more than 30 days old is critical to my being able to evaluate either an investment idea or an additional subscription service.
Now if you had the expertise of a dedicated investment news outlet (WSJ, Barron’s, etc.), I can understand that there would be a return on that investment, but most of the articles are not written by an investment professional, let alone an SA staff writer.
If you need additional revenue to maintain and enhance the web site, I would gladly sign up for say $10/mo. Asking for an additional $900/yr for nothing more than retrieving information stored on a disk drive far is beyond reasonable.