# Admin & Billing

**What’s the hourly rate policy?**

* Pay-as-you-go. You’re charged only for the duration used. Any unused portion is refunded when the machine stops.
* **"Is TD-Pro a one-time fee or subscription?"**
  * It’s a $19.99/month subscription. You still pay machine usage on top of that.
* **"What does TD-Pro give me?"**
  * 200GB persistent storage
  * 20% discount on machine rates
  * $10 in monthly credit
  * Ability to use 24/7 file browser without launching a machine
* **"Do I pay the hourly rate in addition to the Pro fee?"**
  * Yes. You’re charged for actual usage on top of the monthly fee. The $10 credit offsets part of it.

##

## How to find an invoice?

<figure><img src="/files/DU0ekUjDTXSywNFRvAiq" alt=""><figcaption></figcaption></figure>

***

## How to add funds in advance?

<figure><img src="/files/Pc4Dt843W2uAkbBSZScb" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.thinkdiffusion.com/thinkdiffusion-walkthrough/admin-and-billing.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
