I first heard of them, until my link discovery and google simultaneously.
bred cat and worth 250ETH, which is crazy, even though it's a cryoto cat it seems out of my imagination, maybe i'm not in this game
)
It's similar to rare pokemon cards but this is digital. Kitties were the first NFTs couple of years ago. I even bought some cheap ones. For me those prices are too big but still if someone is willing to buy we can't say anything agains it.
It is very difficult to understand the world of NFT. Seriously, even sometimes NFT buyers do not understand why they buy these figures, art, but they buy it, they like it.
Therefore, it seems to me that there is no strict rule according to which the NFT can be sold more expensive