> For the complete documentation index, see [llms.txt](https://whitepaper.crypto-hunters.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://whitepaper.crypto-hunters.io/game-introduction/revenue-streams/secondary-market-royalty-fees.md).

# Secondary market royalty fees

Crypto Hunters have a royalty fee for all NFT trades in any Polygon-powered marketplace, including TokenTrove, OpenSea, Babylons, and the official Polygon Marketplace. As our trading economy expands, so too will our revenue from these royalty fees. We anticipate that this will become a major source of income in the near future. The implementation of this feature is already complete and will be rolled out within the Crypto Hunters ecosystem shortly. Our royalty fee is 5% of each sold NFT.