# Billing

<code class="expression">space.vars.MOVER</code> uses a prepaid [Usage Pack](#usage-packs) model. You purchase a data transfer package upfront in a size and duration that fits your needs. Once purchased, the pack functions like prepaid credit: your balance decreases only as you transfer data between your connections, and it remains valid until the duration expires. You pay only for the data you need, with no ongoing commitments.

## Usage Packs

Usage packs range in size from 100GB up to 10TB, so you pay only for what you need. The smaller packs cover initial testing; the larger packs cover a full migration from a legacy system.

To purchase a new package, open the *Usage Packs* page in your <code class="expression">space.vars.MOVER</code> dashboard, choose a package size, and check out.

Each usage pack includes an expiration date, which is calculated from the date you purchase. Once the pack is expired, you can no longer use any remaining transfer in the pack.

## Payment Method

<code class="expression">space.vars.MOVER</code> supports payment by credit card or by PayPal.

Add your payment method on the *Billing* page in your account.

All packages are charged to your payment method at the time of purchase. Your card is processed immediately when you select a package.

## How Data Transfer is Calculated

Only data that is actually transferred during a migration counts toward your usage. Files that are skipped based on your settings do not count as usage. Failed transfer attempts (from connectivity issues, permission errors, and similar problems) do not count as usage.

Starting a *Dry Run* for a migration does not count as usage.

## Managing Your Data Allowance

Your Purchase History page shows the usage packs you've purchased. The table includes:

<table><thead><tr><th width="291.38671875">Column</th><th>Contents</th></tr></thead><tbody><tr><td>Package</td><td>The size of the usage pack</td></tr><tr><td>Purchased</td><td>When the pack was purchased</td></tr><tr><td>Expiration</td><td>How many days until the usage pack expires</td></tr><tr><td>Used</td><td>Amount of transfer used</td></tr><tr><td>Remaining</td><td>Amount of transfer remaining</td></tr><tr><td>Status</td><td><em>Active</em> if the pack is not expired and has remaining usage.<br><em>Used</em> if there is no transfer remaining for the pack.<br><em>Expired</em> if the pack's expiration date has passed.</td></tr></tbody></table>


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