I recently purchased JContentSubscription and JUser...

I have to say, even for a novice like me it was very-very-easy to setup my subscription pages using JCS. During the design of my site I was a bit worried about how I was going to setup paid subscriptions, but with JCS it was a 10 minute job!

My only gripe is that the English strings are not very good (understandable considering the developers are not english), but it's not that big a deal as the strings are easily changed and there are not many of them.

The help manuals (downloadable from the site) are very informative and tell you exactly what to do. I've not needed to use it, but the support site seems good.

I'd 100% recommend this to anyone who is looking for a way to add pay-per-view content to their Joomla site.