Well, yes, for the full feature version. There is also a $500 version that doesn't have some of the higher-end features.
As someone who bought a license to Circuit Studio (the $500 version), I can't recommend it. Missing some of the higher-end features is being polite; while there is no agreement on what is high-end, I found that many general-use features from Designer were carelessly stripped out or left in a broken state. Then, of course, are the bugs and Altium's refusal to share a product roadmap for CS. Despite not communicating what they want to improve about the product, and when they plan to deliver it, they still want a subscription fee.
It's 100% worth it for the support alone. Not to mention the workflow and features.
If $13k/year makes my design take half the time and cuts my chances of a fatal error in $26k of boards in half, I'll buy it every time.