If you own an NFT, it can only be listed for sale on a single platform at a time.
If you are an NFT artist looking to sell your NFTs, we strongly suggest minting and selling your art on one platform. If you mint your art on multiple platforms, especially at different prices, you can expect backlash from potential collectors.
With that said, we do encourage experimentation. List different NFT artworks on a variety of marketplaces, and see which gives you the best results.
Be aware; much of an NFTs’ value comes from its scarcity. You may be able to sell 100 pieces of one NFT artwork, but if you sold just 10, would prices be less likely to decline in the long-term?