> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ttapi.io/llms.txt
> Use this file to discover all available pages before exploring further.

# How does TTAPI pricing work? Quota usage, discounts and payment methods

> Learn how TTAPI pricing and quota system work, including how usage is calculated, current discounts, billing rules, and supported payment methods.

## Quota and billing model

* TTAPI uses `quota` as its billing unit, where `1 USD = 100 quota`
* For example, a task that costs `4 quota` consumes `$0.04`
* TTAPI uses a prepaid model, so usage is deducted from your existing balance
* Purchased quota is currently **non-expiring**

{/*
## Payment options

TTAPI supports multiple online payment methods, including card payments and crypto.

If you need enterprise billing support or a custom commercial plan, [contact us](/grids/en/about/connect).
*/}

## Refund policy

For paid, used, credited, or already-charged products and subscription services, TTAPI does not accept any refund requests unless there is a platform-side product issue.

To cancel a **Midjourney Hold Account** subscription, go to the **Billing** menu, find the first order created when you originally subscribed, and cancel the subscription from that order.
Cancelling a subscription only stops future automatic charges; subscription fees already incurred are non-refundable.