Purplus offers TurboCAD 18 Deluxe 2D/3D for Windows, model no. LMTURCS18J, for $11.95 plus around $3 for shipping (select USPS Standard at checkout). That's the lowest total price we could find for this design software by a buck. It features 2D/3D drafting, modeling, and photorealistic rendering.
Posted June 26, 2013