Anyone can save a copy of an image, so why are some people willing to pay for its NFT?
This is how I understand it: NFT prices are determined by transactions between buyers and sellers. Their liquidity is usually lower than that of fungible tokens, so when you want to sell, you may not be able to find a buyer.
ERC-1155 can issue both fungible and non-fungible tokens in a single contract, and is often used for scenarios such as in-game items.
Transferring and trading NFTs on Ethereum requires $ETH to pay Gas. Currently 1945.33.