How we set prices
One rule for every address: the rarer its pattern, the more random keys it takes to find one like it, and the more it costs. Here’s the math, so you can check it.
The formula
price = $9 × 4score − 7.5
The rarity score counts the keys it takes to find an address like this one: score s means about 16s keys. Score 7.5 is the least rare we sell, at $9. Every point after that is 16 times more work and costs 4 times more. That’s the whole price: there are no markups for popular patterns and no auctions.
Why we count keys
The only way to find a vanity address is to generate random keys until one matches. So the honest measure of work is the number of keys that takes.
We looked at pricing by time or by electricity, but both depend on the machine. The number of keys is the same no matter who searches, so it’s the one measure you can check.
How we count them
We look at what kind of pattern an address has and use the exact odds of a random address having it:
- The same character n times in a row, at the start or end: 1 in 16n−1. The first character could be anything, so it doesn’t count.
- Leading zeros, which people want specifically: 1 in 16n.
- A word like “dead” or “c0ffee”, or a run like 012345: the number of such words or runs × 16−length.
- A pattern that could sit anywhere in the middle: multiplied by the number of places it could be.
- All letters in the same case, upper or lower: 1 in 2letters − 1.
- Mostly digits, or one character showing up many times: exact binomial odds.
Separate parts multiply. Then we divide by 6, because we check for many kinds of pattern at once. We measured by simulation that a random address shows some pattern at least that rare about 6 times more often than one pattern’s odds suggest. With that correction, “1 in N” really means one random address in N.
We also checked the model against our own search machines: the number of addresses they find per billion keys matches what it predicts.
Rarity tiers
The rarity score is that number of keys on a shorter scale: each point means 16 times rarer. We only list addresses with a score of 7.5 or more, about one in 1.1 billion: over an hour of work for one CPU core. Anything easier you can make yourself with the free generator, so we don’t sell it.
| Tier | Score | Rarer than | Price from |
|---|---|---|---|
| Rare | 7.5+ | 1 in 1.1 billion | $9 |
| Epic | 8+ | 1 in 4.3 billion | $18 |
| Legendary | 9+ | 1 in 69 billion | $72 |
| Mythic | 10+ | 1 in 1.1 trillion | $288 |