You can sell NFTs that you don't own through Affiliate links and earn 1.25% market fee.
Read more about how AffiliateDirects work on this article:
On any Thing Page, click on Copy AffiliateDirect Link
Start sharing the link.
If someone buys this NFT through the link you shared, you instantly receive 1.25% of the sale.
You need to be connected to Mintbase to generate the AffiliateDirect link