DJI Phantom3 Professional (Polygon mesh 3D model) is available on CGTrader for $39. Original author: arapps3d. Specs: 558630 polys, 608028 verts.
OBJ (OBJ, filesize: 15.4 MB), TEXTURES (Textures, filesize: 124 KB), MAX (Autodesk 3ds Max, filesize: 80.8 MB), FBX (Autodesk FBX, filesize: 55.8 MB), UNITYPACKAGE (Unity 3D, filesize: 55.8 MB)