# Fee Structure

* **Feeding fee:** This fee requires foods produced from the production land plot to pay for.
* **Breeding fee:** This fee requires users to spend their MAG token. Note: The higher the level of the Mongen, the more amount of MAG is required. 
* **Evolving fee:** Evolving requires a certain amount of MAG token. Note: The higher the level of the Mongen, the more amount of MAG is required. At some advanced levels of the evolution, both MSTR and MAG token may be required.
* **Fusion fee:** Fusion requires both MAG and [**MSTR tokens**](https://monsterra.io/). The fee will increase respectively with the rarity of the Mongen used in the fusion process. 
* **Skip time fee:** To reduce the waiting time, users have to spend their MAG token. The required amount of MAG depends on the remaining time of the specific process (like breeding, hatching, etc) 
* **Arena fee:** System will charge the winner 5% of the total betting amount in the PvP battle. 
* **Buying energy:** To buy energy, users have to use their MAG token. Note: The total number of times to buy energy is limited within a day. 
* **Conversion fee**: a small amount of MSTR token is required to convert item in-game into NFT.
* **Upgrade land/plot:** It requires users to spend MAG token on upgrading land and plot. The higher the level of the land/plot, the more amount of MAG is required.