Check out Marble wall 30 3D model on CGTrader for $19. High-quality mesh by notfun: 100 polys, 100 vertices. Textured, UV Mapped.
STL (Stereolithography, filesize: 890 KB), OBJ (OBJ, filesize: 635 KB), FBX (Autodesk FBX, filesize: 1.06 MB), MAX (Autodesk 3ds Max, filesize: 1.1 MB)