From a business perspective this is a terrible choice. A customer would most likely not buy a monthly script when they can get it for one payment elsewhere. Regardless of what new features osbot can offer it can be replicated by competition within a week.
Solution, allow of instance control to the scripter. If someone wants to only use the script on one account at a time price should be much lower, multiple instances higher, etc. Also java is not that complicated. Most scripts take the writer very minimum time and hardly ever require updates. So a script I made in an hour should not be monthly. Only scripts that should be monthly at gold farming ones or ones that can destroy the rs economy. I understand there is bandwidth to be paid for but that's what the membership r,anks are for.