It’s not quite Prime Big Deal Days yet, but we’re going to let you in on a pretty Big Deal that’s currently available on Prime Video right now.

For a limited time, adding Starz to your Prime Video account as a Prime Video Channels add-on will come with some significant savings — $21, to be exact.

By the end of today, October 2, you can snag three months of Starz for just $3/month instead of the typical $10/month — that’s $9 total instead of $30.

To get the deal, head over to the Starz landing page on Prime Video. If you’re already subscribed to Prime Video, you’ll be able to add Starz at the deal price, but if you’re not, you’ll need to become an Amazon Prime ($15/month) member first.

A new Prime subscription comes with a 30-day free trial, but due to the deal, you won’t get the standard 7-day free trial of Starz; you’ll be charged $3 immediately for the add-on.

After the three months are up in early January, your Starz subscription will change to $10/month.

This month, Starz is airing the second season of the horror comedy Shining Vale and adding The Blackening to its library, just in time for Halloween. You’ll also be able to catch up on shows like Outlander and Power Book IV: Force and check out the latest blockbusters like John Wick: Chapter 4.

For more content, check out the Decider Shopping section.