> For the complete documentation index, see [llms.txt](https://aincrad-legacy.gitbook.io/aincrad-legacy-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aincrad-legacy.gitbook.io/aincrad-legacy-docs/economy-and-social/col-and-trading.md).

# Col & the Player Economy

Aincrad Legacy's currency is **Col**, and the economy around it works differently from what you may be used to: **NPCs never buy your items**. All Col enters the world through play, and almost everything of value changes hands between players.

## Where Col comes from

* **Killing monsters.** Every kill pays Col directly, scaling with the monster's level:

  ```
  Col = 10 x level + random(0 to 20) x level
  ```

  so a level 50 monster pays between 500 and 1,500 Col. [Field Bosses](/aincrad-legacy-docs/world-and-monsters/field-boss-hunts.md) multiply this payout by **10x to 40x**.
* **Quests** - especially [Adventurer's Company](/aincrad-legacy-docs/progression/adventurers-company.md) missions.
* **Trading with other players.**

Party members each receive their [share](/aincrad-legacy-docs/economy-and-social/party-play.md) of kill Col, and the **Col** [Global Bonus](/aincrad-legacy-docs/economy-and-social/global-bonuses.md) raises everyone's gains while active.

## No junk, no NPC selling

Since nothing can be sold to NPCs, there is no junk loot to vendor - and so there is **no junk at all**. Each monster drops a **single, unique collectible** that has an actual use, instead of piles of filler items.

Col itself is spent on professions, utilities, and quality-of-life services - the systems that keep an Adventurer running.

## Trading between players

Everyone has access to **vending and buying** [**stalls**](/aincrad-legacy-docs/economy-and-social/stalls.md), set up in a designated market area. Two rules keep the market honest:

* **Trading tax: 2%** on every stall transaction of **50 Col or more** - selling or buying stalls alike, always paid by the side **receiving** the Col. The Adventurer's Company needs funding to run, after all. (Below 50 Col the 2% would not even reach 1 Col, so small trades are simply tax-free.)
* **Rare drop announcements:** whenever an item with a drop chance below **0.25%** drops, the server announces it - exceptional finds are public knowledge the moment they happen.

## Loot protection

Your kills are yours: loot dropped by a monster you (or your party) killed is **protected for 10 seconds** before anyone else can pick it up.

## Rare drop announcements

Whenever an item with a drop chance of **0.25% or less** drops, the whole server is notified: the announcement names the player, the monster and the item, along with the drop chance. Land a rare one and everyone will know.

## No weight, big bags

Weight has been **completely removed** from the game, and the inventory holds **400 slots**. You will rarely need to leave a farming spot just to unload.


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