I don't remember at what price Autodesk was selling their softwares when they had perpetual licenses but i think that it was more than 3k €, maybe i'm wrong. I never paid too much attention to them because they were out of my "pocket" anyway. Of course i have, it was a case of some years ago. There are numerous articles…
If you are in EU you can sell and buy used license of softwares as you please. It doesn't matter what the company say. It's the law. That's why Pixologic on their site say that if you are in EU you can contact them to arrange the sale of your license but they don't support the reselling in countries outside EU. For your…