At the present time, there is no possibility to buy fuel at Kikity.
You can refuel at Ketrzyn (EPKE) or Gryzliny (EPGR).

- Here you can check the fuel avaibility and prices in Poland

You will most likely have to pay the higher price of the two given, as the lower one is used only for training flights
(prices are given in PLN, the highest table is the most current).