How much is NFT worth?

As someone who is interested in the world of cryptocurrency and digital assets, I'm curious to know - what is the true value of an NFT? Is it simply the amount someone is willing to pay for it, or are there other factors that come into play? Are NFTs a sustainable investment, or are they just a fleeting trend? I'd love to hear your thoughts on this topic, and any insights you may have into the future of NFTs and their potential value in the market.