Schleicher ASW 22 Sailplane V02 (Polygon mesh 3D model) is available on CGTrader for $69. Original author: Dreamscape. Specs: 5327 polys, 3053 verts.
STL (Stereolithography, filesize: 97.3 KB), OBJ (OBJ, filesize: 209 KB), DWG (AutoCAD, filesize: 125 KB), MAX (Autodesk 3ds Max, filesize: 61.3 KB), LWO (Lightwave, filesize: 53.5 KB), DXF (DXF, filesize: 124 KB), OTHER (Other, filesize: 298 KB), 3DS (3D Studio, filesize: 49.4 KB), TEXTURES (Textures, filesize: 477 KB)