What Is an NFT Marketplace? How NFT Marketplaces Work, Fees and Royalties Explained

An NFT marketplace is the shopfront of the NFT world — the website or app where digital collectibles, game items and tokenised art are listed, bought and sold. Understanding how these marketplaces actually work — their fees, royalties and custody choices — is the difference between trading confidently and paying costs you never saw coming.

This beginner guide explains NFT marketplaces step by step. Follow Web3 gaming coverage on the Zimbuck News page and discuss new games in the Zimbuck Market News group.

What an NFT marketplace actually does

An NFT is a unique token recorded on a blockchain, proving ownership of a specific digital item. The marketplace does not usually hold that token itself. Instead it provides the listing board, search, pricing display and checkout flow, while the actual transfer happens on-chain between the seller's and buyer's wallets through a smart contract. Think of it as a classifieds site and an escrow machine combined: discovery happens on the website, settlement happens on the blockchain.

• Listing: a seller connects a wallet, chooses an item, sets a fixed price or an auction, and signs the listing.
• Discovery: buyers browse collections, rarity traits, price history and verified collection badges.
• Settlement: on a sale, the smart contract moves the NFT to the buyer and splits the payment between seller, marketplace and — where supported — the original creator.
• Gas: the blockchain network fee for recording the transfer, paid on top of the sale price.

Fixed price, auction and offers: the three ways items sell

A fixed-price listing is the simplest: the first buyer willing to pay the stated price gets the item instantly. An auction runs for a set time, and the highest bid wins when the clock ends — common for rare, one-of-one pieces. The third route is the offer: a buyer proposes a price for an item that is not listed, or listed above what they will pay, and the owner can accept, decline or let it expire. Knowing which route a platform supports matters for game items in particular, where the titles covered in our NFT games explainer often trade the same items across several marketplaces at once.

Fees and royalties: where the money goes

Three separate costs hide inside most sales. The marketplace fee is the platform's cut of the sale price, set by the platform and shown — if you look — before you confirm. Creator royalties are a percentage the original creator asks to receive on every resale; whether a given marketplace enforces, makes optional or ignores royalties has been one of the fiercest debates in the NFT economy, and it directly changes what sellers net. Finally, gas fees pay the blockchain itself and vary with network congestion. A cheap item sold at a busy moment can carry a gas fee larger than the item's price, which is why experienced traders batch actions and watch network conditions. Platform incentives can change behaviour just as fast as fees do — see how a bounty programme moved a whole gaming community in our Sandbox bounty report.

Custodial vs non-custodial, and staying safe

On a non-custodial marketplace you keep your NFTs in your own wallet and sign each action yourself — you hold the keys, and the risk. On a custodial one, the platform holds items in accounts it controls, which feels simpler but means trusting the platform as you would an exchange. Either way, three safety habits are non-negotiable: trade only on the marketplace's real domain, reached from your own bookmark, never from a chat link; check the collection's verified badge and contract address before buying, because copied collections are the most common scam in the space; and never sign a wallet prompt you do not understand — a signature can grant transfer rights, not just log you in.

How to make your first purchase, step by step

Set up a reputable wallet and fund it with the chain's currency for the price plus gas. Open the marketplace, connect the wallet, and find the collection through its verified page. Read the item's price history and the total cost breakdown — price, fees and gas — before confirming. Confirm the transaction in your wallet, wait for the on-chain confirmation, then verify the NFT appears in your wallet or profile. Keep the transaction hash: it is your permanent receipt on the blockchain.

FAQ

What is an NFT marketplace? A platform where NFTs are listed, discovered and traded, with settlement executed on-chain by smart contracts between wallets.

Do marketplaces hold my NFTs? Non-custodial ones do not — items stay in your wallet. Custodial ones hold them in platform accounts.

What fees will I pay? Typically a marketplace fee on the sale, any creator royalty the platform applies, and a blockchain gas fee for the transfer.

How do I avoid fake collections? Use verified collection pages, check the contract address, and reach the site only through your own bookmarks.

This article is general educational information only, not financial advice. Join the conversation on Zimbuck — the finance social platform for traders and investors.