@rich o brien said:
Blender is free. Supports .DAE imports which SketchUp does and its EEVEE and Cycles render engines are on par with the big commercial apps.
Also look at the wonderful SketchUp importer for Blender here...
https://github.com/RedHaloStudio/Sketchup_Importer/releases
It work very well. Seems to keep the scale of SU objects and imports their material.
Also look at Simlab Composer. Their is a free version (can be used for ANY purpose) that renders up to 1080 res or the Pro version (starts at $108/yr) with no render size limitations.