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

# Trade

Marketplace

![](https://1830720158-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgYfXodpIgXT5pRSOvcc4%2Fuploads%2F0LyQCSkUxFMFTOhQOvCg%2Fpage2.png?alt=media\&token=7528fa82-8b54-49ca-9197-a136cf1df368)

A marketplace to buy and sell NFTs will be launched on all chains that CKST is deployed on. 

**Key attributes:**

* A seller only needs to sign an approval message in order to list a Gun for sale (no transaction or transaction fee is required).
* The seller can also indicate an expiry time for their listing. If no suitable offer is made by the expiry time, the listing will be automatically cleared from the marketplace.
* The buyer will need to make a transaction to buy a listed item.
* If a seller wants to cancel their listing before the expiry time, they will need to make a transaction.

The primary currencies are CKST and the specific marketplace chain currency. Holders of CKST will be entitled to a VIP tier fee discount in the generalized cross-chain marketplace in the future. For NFT contracts with data storage, on-chain techniques will be utilized to facilitate the transport layers required for data transfer when moving the NFT across chains.\ <br>