I am not in the CNC Router business. I enjoy designing and producing STL files for my own gifts and awards for events that I go to. Like you, I purchased a CNC router, I know the learning curve of just getting it running. The CadCam software will only get you so far in design. To produce STL files is $expensive$ or a long learning curve. 

I am selling my own STL files that I created for $8 or less Plus TAX. As long as this website generates the ROI to keep it up and running, the STL files I create will end up here.  Yes please, if you cut these, sell them. If you can make money with these STL files, I hope you come back for more.

Thank You.