I understand why there are issues with ship sales.
At the same time, I've recently purchased three different capital ships from various players, one of which happened to be a Liberty Siege Cruiser. (The other two cap ships were in factions I already belonged to.) The first thing I did was rename that ship. I'm flying that ship now as an indie pilot that's still an LN pilot, albeit not part of the official faction - because for me, it's a whole lot easier and efficient from the time perspective to buy a pre-made ship.