AFAIK, there's no concept of "second hand" software. You either have a license or you don't. It doesn't get cheaper just because someone else already registered it. That said, I know that Luxology and Pixologic allow selling of licenses but I don't know about Autodesk. They are generally not all that flexible on stuff like…
Yea if your looking to buy Autodesk products, there is only 2 ways to buy...either through Autodesk or via an authorized reseller. No ways around this. Pixologic is cool with you buying software second hand, but you have to contact them to transfer the license...I think Adobe also used to be like this...but I'm sure that's…