I haven't been following the hyperinflation news recently - are the Good Guys still running those Prime Controllers? How about the Bad Guys like cmilian, didn't they bid on a PC?
I wasn't paying close attention, but was it not established that all that ownership of a PC consists of is knowledge of a secret key? And as such, there is really no way to 'sell' one, as the 'buyer' cannot force you to forget the key?
Further, that each of the PC keys have been freed from captivity?
I think there was supposed to be a fork to invalidate old keys and create new ones, presumably distributed using a bidding process. Of course the whole process is run via forums and hangouts so good luck trying to figure it out.