Survival kit is an in-game item that can be used to upgrade your account, reset level-up character stats or reset character reputation

without using traditional payment methods or referring other players. Survival Kit can be bought through “Upgrade” page or in-game markets (shops) with in-game currency – Bottle Caps.

Because Survival Kit is an in-game item, it is possible to make in-game profit by buying and selling it to other players. 

They cost 5 EUR  (5.6 USD)