# Inventory & Market
On the top bar of the game panel, you'll find the **Inventory.**
**This place serves two functions:**
* It allows you to view all the resources you currently possess,
* By clicking on the shopping cart icon, you can at any time proceed to trade a given resource (Market).
## **Market**
In Space Cartels, you can trade almost any resource any number of times per turn.
Most resources have the same purchase and sale price, which means if you accidentally buy 10 units of Steel for 60 Amero, you can sell it without loss and get back 60 Amero.
*However, remember that the purchase and sale price will not always be the same - more on that later.*
The price of each resource is variable and adjusts every turn, depending on whether purchases or sales of that resource by players dominated the previous turn.
**Example**
In the first turn, players of a given season sold a total of **100 units** of steel and purchased **110 units**, resulting in a demand exceeding supply by 10 units. Such a situation means that the price of steel in the second turn will increase by **4.76%.**
*The price of a resource can never fall or rise by more than **7% per turn.***
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