Judging value.

Floor price is the best known and least reliable figure; use the 30-day median sale price instead.

Volume can be inflated by wash trading — compare unique buyers with transaction count.

Holder distribution says the most: heavy concentration means one seller can break the market.

Rarity commands a premium inside a collection, but evaporates when the collection falls out of fashion.

Utility is more durable: access, income, governance or a service worth having without speculation.

Creator track record matters as much as the artwork.

Fees hit twice, on entry and exit, and easily consume 5–10% of a small position.

Assume a slow sale and a discount to asking price in illiquid collections.

Size the position as high-risk money you can lose entirely.