P2J is up today for the advent calendar.
It's a fun tank to drive around, I enjoy mine, but prepare to lose money every time you play, as the gun is underpowered. Even with gold ammo it barely has enough penetrations for the heavier armoured targets that it meets. It has great armour, at a massive cost to speed and it's gun.
It is a balanced tank overall, but not really against unexperienced players (who you frequently meet). You do not see red players doing particularly well in them (unlike arty) and the troll armour is the only trick this pony gets. If you are not a collector I cannot recommend this tank. If you are: Go for it. It's fun, but only to drag out for 1 or 2 games every now and again. Oh, and you WILL lose in-game credits playing this.
They should not ever sell this tank cheap, or have it available for several days, but single day sales at a high cost is a fine idea, giving collectors a chance to get one.
Just my 2 cense for anyone thinking of buying one, just so you know what to expect from this infamous tank.