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oh thank you!

you can sell if you market yourself a lot in twitter and collectors find you there, a lot of hard work ha opensea is the main marketplace for ethereum and polygon, it's easy for using, you have to first install the metamask addon in your browser and this will create you a wallet, with that you can login in opensea, keep in mind that ethereum have high gas fees, you can check the gas costs here https://raribleanalytics.com