Video-game collectibles are an odd one, mostly because so many copies were made or sold and the valuation relies on three things:
- millions of copies made were consumed, wilfully discarded or otherwise written off.
- the Kafkaesque concept that whatever is in the sealed box is a worth a lot, but you can never touch it or open the box - lest its value turn to dust.
- people valuing the box far more than the easily copied, digitally indistinguishable and lossless ability to replicate the thing inside.
The Mona Lisa, by contrast, was a painting that was a one off commission by a wealthy merchant from a revered artist, and whilst you can photocopy it, imitate it, you can never own one thats really and truly the same, and the specific history attached to the single item carries a value. Nobodies thrown it away, there were never millions of them in circulation. The value of the painting is also its appearance and presence, which you can genuinely enjoy without having to lay a hand on it (for the sake of protection from elements).
That said, I still think art, generally, is block-chain and NFT's for the digital generation - rife with bad practice on the sale and value side.