# Fees and rules * Marketplace trading fee: 5% in NEXT, paid by NFT Card Sellers. Marketplace trading fee can be used to cover operation cost or burned. * *All the fee (boosting, recharging, redeeming) in NEXT will be burnt.* * Anti undercover sale: ShopNEXT marketplace is the only place to trade NFT cards. If a user transfers the card outside our marketplace, the card will be voided and cannot be used in the ShopNEXT gameplay anymore. * After listing, it will take up to 24 hr for an NFT card to appear on the marketplace. * Owner cannot apply the listed NFT cards to transactions or use them to increase the reward index; but karma of listed cards can still be used in calculating account average karma. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.shopnext.io/whitepaper/how-to-play/fees-and-rules.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.