Hello, Are there any second-hand software marketplaces that sell Autodesk or engineering software in general?
Of course. But no wonder you haven’t found one, usually, only businesses buy the software like this, and businesses can afford the full price. I can recommend one here, just buy and sell software with Software-Gate.com ! That’s where I found license for Revit and 3D Civil, but pretty much all the Autodesk products are there.