"Some of the qualities that make an NFT go up in value are: Design, Originality, Scarcity, Rarity, First Edition..."

this quote is from an article I found which states it rather simply.  Here are some parts of the article:

What (really) are NFTs and why are they becoming so successful?

  NFTs are certificates that attest to the authenticity, uniqueness and ownership of a digital asset (such as an image, a video, a song, etc...)

so they can not be replaced with other goods of the same kind (as it is for the money, which is interchangeable)

The most obvious example of this is with paintings and works of art: they are also unique and 100% original...

NFTs are being used in various sectors such as music, sports and online games, but the largest market remains art.

The popularity of these particular digital assets began to accelerate in early 2021 before exploding in March on the back of news of the sale of the most expensive NFT ever: that of the artist Beeple, which London auction house Christie's fetched $69 million...

Some of the qualities that make an NFT go up in value are: Design, Originality, Scarcity, Rarity, First Edition...

 NFTs are having a sudden and resounding success and the most relevant thing is that they are NOT a trend, but they are drawing a digital future closer and closer...

...

The NFT market, in fact, is growing at a dizzying pace, analysts at investment bank Jefferies expect the value of NFTs to double next year and approach $120 billion by 2025, they also see non-fungible tokens as a big opportunity for companies, from any sector...

...

(end of article snippets)