$15 Sikorsky S38 Low-poly 3D model by Helijah. Available on CGTrader with 231000 polys and 252000 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 20.4 MB), OBJ (OBJ, filesize: 21.7 MB), GLTF (glTF, filesize: 10.1 MB), PNG (PNG, filesize: 1.67 MB), FBX (Autodesk FBX, filesize: 11.3 MB), BLEND (Blender, filesize: 32.6 MB), OTHER (Other, filesize: 29.6 MB)