Why have some ships got crystals in their prices, if we'll never be able to buy them in the F2P version? Are the crystals similar to an add-on to the game to make it F2P without taking into consideration if the ship can be purchased or not with a F2P account? I see some ships have a 4+ license requirement, which you can't get to with a F2P version, but their prices have crystals included, as if there was a chance of buying them with the F2P license.