I just opened my simple website on which I will share my stuff. For now there is only two scenes available for Octane, one of them which is free to download for anyone and use the assets in commercial or personal projects.
They can be found on http://www.ArchvizScenes.com (Note, downloading can be slow at the moment, my web host had a DDoS attack this evening which isn't resolved yet).
Hope this free scene can help someone in any way. Use the models, HDRImap, examine how the final result is achieved or whatever
Images from the free scene. Available for 3Ds Max, Octane Standalone and Cinema 4D (C4D version converted by Servet Hosaf, rendered result differs a little bit from the original)
Images from the other scene, available for 3Ds Max and Octane Standalone