The plus model and colour monitor certainly are as they are more rare. I looked on Ebay recently as was tempted to get oneAre they worth a fortune for real? Man,my parents moved me from Scotland to England when I was about 9 or 10 and they refused to take my 464 with us. I still remember begging them to bring it. Had drawers full of tapes as well I wonder if anyone saved it or it got binned :/
I had about 80 games on tape back then. I've still got about 12 in a box. No idea how they survived.