CB Paid Subscriptions (CB Subs) allows you to restrict access to your website content depending on the users subscription, both free and paid. Supports duration based subscriptions, merchandise sales and user donations. It's a very powerful and flexible solution that supports VAT, sales tax, powerful coupon discounting, automated reminder emailing and many more built-in integrations. We use CB Subs on all membership sites we produce, it's the most stable, robust, and supported member subscription system available for Joomla websites. We have replaced several other systens with CB Subs in the past which were totally inadequate.
This was an interesting Job, it was a Joomla Experts test to allow developers to qualify as Joomla Experts, the original authors certainly weren't real Joomla Experts!.
Great to work with! Great communicator! Great technical skills!