£5
Most scenes in Cinema4D are backwards compatible. I tend to jump between versions due to plugins being more optimized in some versions compared to others (cough cough X-Particles). If I make a scene in R26 you can most definitely open it in R20 and other versions.
Yes. This is much more important than the version of C4D you are using. I think anything past Octane 4 or 2020 should be fine. Although the occasional material type or node may be missing across the scenes. But it won't be a deal breaker. (Except for my Noise displacement scenes due to Octane 2020/21 breaking default C4D noise with Octane displacement).
Yes. Everything I produce on the store is Royalty Free. (Maybe just don't download my scenes, open it, render it out and say you made it... lol) As for re distrubuting any assets yes feel free.
I work in Cinema 4D and Octane. Although some files will require plugins such as X-Particles or Forester. (Although even with the Forester scenes I have editable versions of the assets in the scene so you don't need the plugin. You just won't have as much control over the scene.
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