> For the complete documentation index, see [llms.txt](https://orbeonprotocol.gitbook.io/orbeon-protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://orbeonprotocol.gitbook.io/orbeon-protocol/faqs.md).

# FAQs

**Is there a minimum amount I can invest?**

The minimum amount you can purchase is $50 or currency equivalent, the maximum amount you can purchase in one tranche is $250,000.

**How do I purchase pre-sale tokens?**

ORBN will be available to purchase directly from our website [www.orbeonprotocol.com](http://www.orbeonprotocol.com) once the presale period has elapsed you will be able to purchase ORBN on UniSwap.

**What payment methods will be accepted for purchase of ORBN tokens?**

We accept Ethereum, Bitcoin, USDT, BNB, Ripple and wide range of different cryptocurrencies. A full list of all accepted payment methods is available on the presale dashboard.