But they are there. Even a cursory look shows several of them misnamed in listings as other types of Yamaha. Leads me to believe that they're stolen. They list it as an FZ6 R but the actual bike for sale is a Vmax. Like this ad:
https://www.smartcycleguide.com/L49661337
There's a BUNCH of them in there like that. Probably selling by image as people just flip through listings looking at pictures and hiding the description because they're stolen.
After all, that's the first thing cops do is look at the classifieds. They don't see a Vmax named for sale they assume it isn't there.