Ship and slot, 20.60 €. Link:
https://eu.wargaming.net/shop/wows/vehicles/3445/
Also some bundles:
-Supreme, with flag and plenty of other stuff, 70 € (link: https://eu.wargaming.net/shop/wows/specials/3447/)
-Ultimate, with 6000 doubloons and 100 flags, 40 € (link: https://eu.wargaming.net/shop/wows/specials/3446/)