Celtic ACEOs are a curated corner of the market. Scarcity is the norm here, not the sales pitch. The cards that move tend to be one of a kind, and a premium price only sticks when there is a real reason behind it. Right now 6 sellers are listing, 83.3% of them with a single card up. The top seller holds 28.6% of what is listed.

The middle of the market sits at $10. Most cards list between $3 and $26.99. Over the last 14 days the typical price has been sliding, from $15.5 to $10. Price inside that band unless you have a clear reason to sit above it: signed, numbered, or a name collectors already chase.

Almost nobody signs their cards here, so a signature is an easy way to stand apart.

In a curated market, the card sells the price. Make something worth the number.