> For the complete documentation index, see [llms.txt](https://bravenine.gitbook.io/brave-nine/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bravenine.gitbook.io/brave-nine/gameplay/about-purified-terra/refinery.md).

# Refinery

Exchangeable amount of Purified Terra will show up at the top. 

When exchanging Purified Terra to Brave Token, an exchange rate and fee will be applied. 

When exchanging Brave Token to Purified Terra, only the exchange rate will be applied. 

Refine Rate (Exchange Rate) will be changed once a week. 

When having not enough quantity to exchange, the exchange button will be disabled. Up to 99 can be exchanged at once.