A mint that cannot oversell:
and a marketplace that settles correctly every time
An NFT build has to get two things exactly right. Supply: a mint that cannot sell more than exists. Settlement: a marketplace that transfers ownership and pays royalties correctly, every time. We build on established contract standards specifically because they have already solved the edge cases a custom implementation tends to miss.
Where the real risk sits
NFT minting and marketplace infrastructure covers three things. The smart contract that defines a collection: ERC-721 for unique tokens, ERC-1155 for a mix of unique and fungible items. The mint site where a collection is first sold. And, where in scope, a marketplace for secondary trading: listing, bidding, settlement and royalty payment on resale. The engineering risk concentrates in two places. Supply enforcement at mint, so a limited collection cannot be oversold. Settlement correctness at trade, so ownership transfers and payments, including royalties, happen exactly as promised.
When a real build is worth it
You need this when you are launching a genuine NFT collection: limited digital art, collectibles, membership tokens, access passes. Either you need a mint experience your own brand controls, or a marketplace with your own fee structure and user experience. You do not want to rely entirely on a third-party platform. A project with a defined collection size, a real community expecting a specific mint mechanism, or a need for custom royalty or utility logic justifies the build.
You do not need this if what you actually want is simpler. A digital membership or access system that does not need to be a tradeable, on-chain asset works fine as a standard database record. See our membership and paywall page, at a fraction of the cost and complexity.
How we build it
Contracts build on audited standard libraries, OpenZeppelin’s ERC-721 and ERC-1155 implementations, rather than custom-written token logic. These standards have already resolved the edge cases, reentrancy, integer overflow, incorrect transfer logic, that custom implementations tend to get wrong. Supply limits enforce on-chain in the contract itself, not just in the mint site’s frontend code. That is the only way to guarantee a limited collection actually stays limited, even against a user who bypasses the website and calls the contract directly.
The mint site, built on Next.js with a wallet connect flow, handles the actual sale with clear transaction confirmation before anything is signed. Where a marketplace is in scope, listing, bidding and settlement logic handles ownership transfer and payment atomically. A trade either completes fully and correctly or does not happen at all, with royalty enforcement following the standard your target trading venues actually honor. Metadata and asset storage goes to IPFS or Arweave when genuine decentralization matters to the collection’s value proposition. It goes to standard cloud storage with a CDN when it does not. We make that call with you, rather than defaulting to the more complex option by habit.
What to watch
NFT royalty enforcement is not universally guaranteed across every marketplace a token might eventually trade on. This is a known limitation of the current ecosystem, not something our engineering can fully solve. We explain it honestly, rather than promising royalties will always be paid everywhere.
Market conditions for NFT collections have shifted substantially since the category’s early peak. We give an honest assessment of whether your collection’s goals justify this build, or whether a simpler non-NFT alternative fits better. We do not just build whatever is asked without that conversation.
Price and timeline
| Option | Price | What it covers | Timeline |
|---|---|---|---|
| Mint site | from $5,000 | Audited contract, on-chain supply enforcement, mint site | 5 to 7 weeks |
| Mint plus marketplace | from $11,000 | Listing, bidding, settlement, royalty enforcement | 7 to 15 weeks |
Running cost is primarily gas fees for minting and trading transactions, which vary by chain, plus standard hosting for the mint site and marketplace frontend.
Related
Pairs with crypto wallet integration for the connect and signing flow, and with smart contract and token launch for the underlying contract work. See the development service page for the full build. For multichain wallet infrastructure relevant to NFT products, see the ten-chain crypto wallet case study. For real marketplace catalogue and settlement engineering at scale, see the ProBay marketplace case study.
Launching a collection that needs a mint and a marketplace that settle correctly? Get in touch and we will scope the contract work honestly.
FAQ
How much does an NFT mint and marketplace cost?
From $5,000 for a mint site with on-chain supply enforcement for a single collection. A full marketplace with listing, bidding, settlement and royalty enforcement across multiple collections typically runs $10,000 to $20,000.
How do you make sure a mint cannot oversell a limited collection?
Supply limits are enforced in the smart contract itself, not just checked in frontend code. Even a user bypassing your website entirely and calling the contract directly cannot mint past the defined supply. This is a basic requirement we treat as non-negotiable for any limited collection.
Do royalties actually get paid on secondary sales?
On-chain royalty standards, like ERC-2981, get enforced where the marketplace a token trades on respects them. That covers most major marketplaces today, but it is not universally guaranteed across every possible venue. It is a known limitation of the current NFT royalty ecosystem, and we explain it honestly rather than overpromise.
Should we store images on IPFS or our own servers?
It depends on your goals. IPFS or Arweave gives genuine decentralization and censorship resistance, which matters if that is part of your collection's value proposition. Standard cloud storage is simpler and cheaper if decentralized storage is not actually a requirement for your use case. We will ask which matters to you before defaulting to one.
Can we build our own marketplace instead of using an existing one like OpenSea?
Yes, and it makes sense when you want your own branding, fee structure and user experience rather than listing on a third-party marketplace. We have direct experience building this for digital goods marketplaces generally, not NFTs specifically, but the underlying catalogue, listing and settlement patterns carry over directly.