> For the complete documentation index, see [llms.txt](https://gum-ball.gitbook.io/gumball-protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gum-ball.gitbook.io/gumball-protocol/how-to/exchange/buy-gbt.md).

# Buy & Sell Collection Tokens

## Requirements

* [x] ETH balance > current gas fees
* [x] WETH balance > current collection token market price 

## Steps

### 1. Select the 'Exchange' tab on the toolbar

<figure><img src="/files/XLyrVOiTsxICRv6kM69H" alt=""><figcaption></figcaption></figure>

### 2. Select the collection tokens you would like to trade

<figure><img src="/files/XzCFv2fk9dfR91fBYpSb" alt=""><figcaption></figcaption></figure>

### 3. Input the number of desired tokens and hit the "swap" button

![](/files/1nOOkOUMZOwgAO5swZ1q)

### 4. Click 'Confirm' on the Metamask pop-up to approve access

<div align="center"><img src="/files/RukhEFlaMIP02Y0TCrR4" alt=""></div>

### 7. Click 'Confirm' on the next Metamask pop-up to initiate buy

![](/files/jAPOMoHBsorcyT5CBo1R)