I'm Alan in my fifties and am really keen to learn and play Panzer by GMT.
I have only been able to buy expansion 4 but have made myself the base game by printing on to sticky printing paper and sticking it to lino. Then I cut up the units from an A4 size piece of lino. Hey, it works and I can't buy the base game anywhere.
I'm in the UK and play on Vassal or by messenger with the map set up on my table.
I'm mainly a Memoir 44 player but Panzer uses such a larger area, that suites me.
I hope people are still playing this and I haven't missed the boat.