Alenia C-27A Spartan Austria (Polygon mesh 3D model) is available on CGTrader for $89. Original author: Dreamscape. Specs: 53708 polys, 28447 verts.
STL (Stereolithography, filesize: 831 KB), OBJ (OBJ, filesize: 1.86 MB), 3DS (3D Studio, filesize: 380 KB), 3DM (Rhinoceros 3D, filesize: 1.1 MB), TEXTURES (Textures, filesize: 1.67 MB), DWG (AutoCAD, filesize: 962 KB), DXF (DXF, filesize: 964 KB), OTHER (Other, filesize: 2.64 MB), MAX (Autodesk 3ds Max, filesize: 397 KB), LWO (Lightwave, filesize: 891 KB), W3D (Shockwave 3D, filesize: 615 KB), SKP (Sketchup, filesize: 4.19 MB)