Check out Low poly Gray Boulder Beach Rock Collection 210106 Low-poly 3D model on CGTrader for $29. High-quality mesh by mega-3d: 6000 polys, 3000 vertices. PBR, Textured, UV Mapped.
OBJ (OBJ, filesize: 1.17 GB), FBX (Autodesk FBX, filesize: 1.17 GB), 3DS (3D Studio, filesize: 1.17 GB), DAE (Collada, filesize: 1.17 GB), TEXTURES (Textures, filesize: 1.17 GB)