AFAIK, you can sell your license, but need assistance from a reseller to properly transmit ownership and registration. I did try to sell my old license once.. Never happened, so it is somewhere in Limbo state.
--- stefan boeykens --- bim-expert-architect-engineer-musician ---
Archicad28/Revit2024/Rhino8/Solibri/Zoom
MBP2023:14"M2MAX/Sequoia+Win11
Archicad-user since 1998
my Archicad Book