> For the complete documentation index, see [llms.txt](https://cryptopolium.gitbook.io/whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cryptopolium.gitbook.io/whitepaper/cards/trading-posts.md).

# Trading posts

Trading posts are grouped by province and can be in groups of two or three. If the player manages to buy all the posts in a province, he can start upgrading them and not be able to swap them with his opponent.

<figure><img src="https://1855337022-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FczsDH4NKRH3olLRv1ixE%2Fuploads%2FlfrNvb8Oay0p7EoezRLF%2FScreenshot%20from%202024-03-14%2019-33-30.png?alt=media&amp;token=8d8c5069-fe9a-4068-aeda-7adca46a5155" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
If the player completes a province, he collects a double fee in the zero-level posts.&#x20;
{% endhint %}

The player can upgrade the posts up to level 3 and the tax to be charged will increase proportionally.