Thank you. ^-^ 'Robocity' is still part of the new name, but I will be using Rolamaton most of the time from now on.
Yes, domain names can be sold or given away. Some people built a business around that, but I only sell when I can't keep them anymore (in this case, the money will help me make more time for Robocity and pay the next year's renewals for the new Rolamaton domains).