While creating an account and starting to browse in Ubox is free, you may need to pay some fees when selling NFTs.
Generally, Ubox charges a 4.5% fee on all secondary sales.
Gas fees are transaction costs paid to Ethereum validators. Ubox does not receive nor can it refund these fees. Ubox cannot control gas prices and does not profit from them. To learn more about Gas fees, please refer to our help guide, "What are Gas fees on Ubox?"