Should they have access to the plugin forum or not?
When yes, i know that we have many questions to manage and the time to make the plugins good/better would be fewer.
Any questions would be realy simple and would be clear, when the user would read the manual.
But all the questions coast time. I think you know it

For me, i develop the plugin alone and have a 6 day job with change morning/midday/night every two days.
So the lateny from the question to the answer can take time.
Sometimes, when i have time, i try to help the other developers to answer the user questions.
And i notice, that i write more text here as code in the plugin

Users that have the intention to use Octane for work or use it seriously, will pay the 99€.
All the others will be childs that want to play with Octane.
This sounds maybe hard but in the bottom line it is right.
On this, i vote for provide the plugins with the commercial version.
face