MPC
Yes, both SketchUp and Mari offer a Free Trial.
SketchUp is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Mari is designed for Large Enterprises, Medium Business and Small Business.
Pricing for SketchUp Starts at $119/Year whereas for Mari Starts at $2,280.
Some top alternatives to SketchUp includes Vectary, 3D Slash, SelfCAD, Clara.io, Giraffe, 3ds Max, Archicad, Revit LT and Lumion.
Some top alternatives to Mari includes Marionette Studio, Harmony, 3D Slash, 3ds Max, Maya, Quixel Suite, Cinema 4D, Modo and Adobe Substance 3D Painter.