# Marketplaces

NFTs created on the platform are fully compatible with the ERC-721 and ERC-1155 standards, which means they can be bought and sold on all Ethereum-compatible marketplaces, with Polygon/MATIC support coming soon!

### Earn Royalty Fees on Sales

Buying, selling, and trading NFTs are a core reason why they are so popular. NFT technology enables true digital ownership, which means users can now easily buy and sell items that they receive from your app. As the [NFT Collection](https://docs.nftyverse.com/apis/mint-nfts/nft-collections) creator, you can easily **set a percentage-based royalty fee** that you will receive for all sales in compatible marketplaces such as [OpenSea](https://opensea.io).

The default royalty fee is 2.5% of the sale price. You can change this while creating the [Collection Metadata](https://docs.nftyverse.com/metadata) or using our APIs.