Several factors influence the cost of NFT marketplace development. These include the complexity of the platform, the features and functionalities required, the chosen blockchain platform and smart contract standards, UI/UX design complexity, development time, and ongoing maintenance and support. Additionally, factors such as scalability, security measures, and integration with external services may also impact development costs. It's essential to work closely with experienced developers to create a detailed project plan and budget that aligns with your specific requirements and goals.
source:
https://www.blockchainappfactory.com/nft-marketplace-development