Yeah, if you Google them, CryptiaCurves are on X/Twitter, SubscribeStar, and their own Itch.io page here where the Blender/Unity models are sold, though not all free ofcourse, with this particular bundle being a big price of $208, so it might be best to wait and keep them on your radar for when the project's budget grows.
Plus, I will say that their models are more on the extremely thicker side 馃槇. So I would recommend that you make new animations rigs that work well for their physic 馃ぃ. Nevertheless, since those models are already widely used in VRChat, they are built to be highly compatible with VR interactions.