Pretty basic 3d printing. Right now I'm focusing on the usual kinds of products (either commercial-compatible CC licenses or models of those I've purchased licenses to), but I'm working towards learning Autodesk Fusion and creating my own products. (Probably focus more on functional items, since I'm definitely not artistic). Netting around $500-1000 a month (eBay, Etsy, Mercari, some FB marketplace)
I believe Amazon has price rules such that you cannot price gouge on Amazon. Do the vendors you list have any rules like that? Or do you just not care?