If you can afford any of these items, sure. I'd have a Tiger Tank if I could afford it. Considering that there are less than 10 in the world in decent shape and only 1 or 2 are actually in running condition, that would be a hefty price tag.
No doubt they are collectors items.
But recall the havoc they caused on the battlefield.
Our tanks were pea shooters in comparison. Shells fired at them would bounce right off. And they could take out opposing tanks over a mile away.