Thinking of developing a number of templates for sale. My main question is there any protection stopping buying a template, modifying slightly then passing off on their own?
Copyright protection.
If someone were to do so, I think quickly find themselves banned from the seller platform and have low trust within the Bubble community. Though I do agree that it could use stronger language on re-use/commercial use for multiple projects.
For current terms: https://manual.bubble.is/account-plans-and-billing/selling-on-the-bubble-marketplace.html#building-distributing-and-selling-templates