1. MM2 Values
  2. Sources and methodology: where MM2 values on this site come from

Sources and methodology: where MM2 values on this site come from

Each value here is a median of independent value lists after their scales are matched, not a copy of one list. This page explains which lists, how the scale is matched and when a value gets a low-confidence flag.

Updated October 25, 2026
On this page
  1. Only two lists are independent
  2. How the scales are matched
  3. From several lists to one value
  4. Low confidence and outliers
  5. Daily snapshot and history
  6. Catalog and images
  7. Game statistics
  8. Russian names

Only two lists are independent

Many sites show MM2 values, but almost all of them repeat the same two sources:

  • MM2Values.com, the list that has run since 2017. It values an item in its own units, where Seer is about 3 and Harvester is 250.
  • Supreme Values, the list most trade servers use today.

Other sites, such as mm2values.app, gemx.store, guide-builder.ru and mm2-scripts.ru, show these two lists with their own wrapping. Counting them as separate opinions would count one opinion several times, so they do not get a vote. They are used to read Supreme's numbers and to cross-check, and an outdated mirror is ignored.

I count two voices, not ten. That is the main difference between this table and a page that "averages" ten sites.

How the scales are matched

The two lists use different units for the same item, though they stay close. On items that both lists price with an exact number, the ratio between them has a median near 1.0 and a typical gap of about 5%.

We take Supreme as the base scale and bring MM2Values to it with a coefficient: the median of the ratios (a geometric one, on logarithms) over the items both lists price exactly. One coefficient for a whole list is safer than fixing every item by hand.

The bottom of the scale is the exception. Commons, uncommons, rares, legendaries and pets are written as "N x T1 of some rarity", and each list turns that into a number its own way. The same text gives 0.44 in one list and 0.8 in another. We do not compare these numbers across lists and take the base list's relative value.

From several lists to one value

  1. Matching. Names from every list are matched to one catalog: case, apostrophes, spaces, "Chroma" and year suffixes are normalized, and the weapon type and rarity break ties. Seasonal namesakes such as the Pumpkin, Gingerbread and Elf of different years are kept apart.
  2. Value. The value is the median of the scaled exact numbers from the independent lists. With no exact number we take the relative value from Supreme, otherwise from MM2Values.
  3. Demand is the median of the lists' demand scores.
  4. Spread. We keep the ratio between the highest and lowest list, so you can see how much the lists disagree.

Low confidence and outliers

  • Low confidence is shown when only one list prices the item. This includes sets, which only Supreme prices, and trophy items, which only MM2Values prices. With one opinion, a median means nothing.
  • Outlier is shown when the lists disagree by more than three times. Treat such a value as a range and ask in trade before agreeing to a price.
  • Market check. For items worth 10 or more, we compare the value with the dollar price on a marketplace, using a rate of about 31 value units per dollar. A gap above three times is also flagged. It is a signal to look closer, not a price.

Confidence on item pages follows the gap between the two lists: within 15% is high, 15–50% is medium, a bigger gap or a value from only one list is low. The item page shows both numbers next to the combined value.

Daily snapshot and history

The table is refreshed every day, and each day's state is saved. Our own history of every value starts on October 25, 2026, and grows from that date. For older changes we show the history the source lists have kept: MM2Values has a recent-changes feed from March 2025, and Supreme has per-item history from 2020.

Catalog and images

The item catalog, rarities, release years and images come from the MM2 Fandom wiki, whose text is available under the CC BY-SA license. Images belong to their authors and to Roblox Corporation. If you spot a mistake in a description, the wiki is edited by the community, so the fix goes there too.

Game statistics

Online players, visits, favorites and the like ratio on the pages come from the public Roblox API for the game with place ID 142823291. They update with each refresh.

Russian names

Players in Russia search for items by the names Roblox's automatic translation gives them: "лезвие призрака" for Ghostblade, "ледокол" for Icebreaker. We build the Russian names from this translation and from real search queries, and we only keep matches we are sure of. The result is on the Russian names guide.

Questions players ask

Why do other sites show different numbers?

They use different units or only one source. Here the scales are matched first, and only then is the median taken.

What does "low confidence" mean?

Only one independent list prices the item. Check it elsewhere before a big trade.

How often are values updated?

Every day. History in our own database starts on October 25, 2026.

Where do the item images come from?

From the MM2 Fandom wiki, under the CC BY-SA license, with attribution.