> For the complete documentation index, see [llms.txt](https://docs.thinkdiffusion.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.thinkdiffusion.com/thinkdiffusion-walkthrough/admin-and-billing.md).

# 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>


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