Kanonenjagdpanzer 105 – price around 36 €. Tank, slot, 100% crew and 5 missions with 5x XP/victory.
https://eu.wargaming.net/shop/wot/main/10750/
IS-6. Price – around 40 €. Tank, slot, 30 days of premium account, 100% crew, 15 missions with 5x XP/victory and 5 crew XP personal reserves.