Check out Dehaviland DHC-8 400 Richards Aviation 3D model on CGTrader for $89. High-quality Polygon mesh mesh by Dreamscape: 39467 polys, 23150 vertices. Rigged, Textured, UV Mapped.
STL (Stereolithography, filesize: 569 KB), OBJ (OBJ, filesize: 677 KB), 3DS (3D Studio, filesize: 278 KB), OTHER (Other, filesize: 1.82 MB), 3DM (Rhinoceros 3D, filesize: 782 KB), TEXTURES (Textures, filesize: 1.74 MB), LWO (Lightwave, filesize: 609 KB), MAX (Autodesk 3ds Max, filesize: 519 KB), W3D (Shockwave 3D, filesize: 1.31 MB)