Check out Discus Sailplane 3D model on CGTrader for $50. High-quality Subdivision ready mesh by rohr3dsolutions: 2387082 polys, 2404652 vertices. Rigged, Animated, PBR.
C4D (Cinema 4D, filesize: 15.6 MB), OBJ (OBJ, filesize: 219 MB), FBX (Autodesk FBX, filesize: 162 MB), MAX (Autodesk 3ds Max, filesize: 218 MB), DAE (Collada, filesize: 116 MB), 3DS (3D Studio, filesize: 94.9 MB), VUE (Vue, filesize: 135 MB), UNITYPACKAGE (Unity 3D, filesize: 92.8 MB)