Rarity comes from how few were printed and how hard they were to obtain: album inclusions are the most common, retailer pre-order benefits are scarcer, and lucky-draw and fansign entry cards are scarcer still. How often a card appears for sale measures supply, not rarity — a card nobody lists may be a grail or may simply be unwanted, and only collectors can tell those apart.
What actually makes a photocard rare
1. Print run — the biggest factor
How many enter circulation differs enormously by benefit type.
Album inclusions — everyone who bought the album. The most plentiful.
Pre-order benefits (POB) — every pre-order buyer, split by retailer.
Lucky draw — winners only. Drops off sharply.
Fansign entry cards — the fewest of all.
2. Retailer — especially from abroad
Cards from domestic-only Korean stores are hard for overseas fans to buy directly, so far fewer reach the international resale market. A card that is ordinary in Korea can be scarce everywhere else. See the retailer guide.
3. Member popularity
Popular members command higher prices, but their cards also surface more often. Expensive and hard-to-get are not the same thing. It is often a less-requested member's card that blocks a set, precisely because nobody bothers listing it.
4. Time
Print runs never grow. Cards get damaged and lost, and collectors sit on what they have. So older albums generally get harder to complete.
★ Why we don't rate rarity ourselves
We can measure supply — how many are listed right now. We cannot measure demand. And zero listings has two opposite causes:
Everyone wants it and nobody will sell it → a grail
Nobody wants it, so nobody bothers listing it → the opposite of a grail
A listing count cannot tell those apart. Labelling a card nobody wants a “grail” would be worse than saying nothing, so every card starts at Common and only moves when collectors say otherwise.
Tier
Set by
Common
Default for every card
Rare
Collector evaluation
Very Rare
Collector evaluation
Grail
Collector evaluation
Unrated
Not observed long enough to say anything
Alongside the tier we always show the plain supply fact — “3 listed now”, “none listed for 90d”. That part we measured. The tier is what collectors think.
Zero listings is still information
“No price data” and “none listed for 90 days” are very different statements. The second one tells you that if you see one, you probably shouldn't wait — regardless of what tier it carries.
That is why the alert on each card follows supply rather than tier. If nothing is listed, an alert is useful whether or not the card is famous.
When we withhold judgement entirely
A card we only started watching shows “Unrated”. Not observed and not available are different things, so below 14 days of observation we say nothing at all.
Below 3 samples we mark the data as thin, and every price carries its sample size and age. A single listing is never shown as a market price.
