It's easy to put that on sale but the question are there takers? Take note of what has been told to you by the others that if it has no value, even it the lowest price, no one would take them.
That's why you need to focus on how you're going to market it first and let the people know that your NFTs are existing. In that strategy, you can dictate what would be the lowest price when you've seen people start talking about your NFT and taking interest on it.