Not many KV's in the showrooms, and no Panzer 4's.
Are they just not popular compared to Tigers and Shermans? Or is it the price differential? They seem to cost almost the same as the Leopard 2, but the insides are the same as the older tanks.
Seems to me that a T34/85 would sell better than the unknown KV, that was not a very good tank in real life. Personally, I don't like the look of the Panzer 4 with the spaced armour plates.
Myself, I have a Tiger 1 that was secondhand on ebay a few years ago.