Yes, both SelfCAD and 3ds Max offer a Free Trial.
SelfCAD is designed for Individuals, Large Enterprises, Medium Business and Small Business.
3ds Max is designed for Large Enterprises, Medium Business and Small Business.
Pricing for SelfCAD Starts at $11.99/Month when Billed Yearly whereas for 3ds Max Starts at $215/Month.
Some top alternatives to SelfCAD includes 3D Slash, Clara.io, SketchUp, 3ds Max, ZBrush, formZ, Onshape, BricsCAD and Autodesk Design Review.
Some top alternatives to 3ds Max includes 3D Slash, SelfCAD, Clara.io, SketchUp, Maya, Cinema 4D, Modo, Revit LT and Lumion.