Upgrade from v13 to v15, is it possible?

I tried searching but could not find accordant info.
Can I get my v13 upgraded to v15 directly (for $49.99)?
Or does "the upgrade" only count when it is from the very previous version (v14)?

 

Hi, you can purchase upgrade and confirm activation with any previous license key. It could be Parallels Desktop 13, 12, 11, 10 etc..
Please let us know if you have any additional questions.

 

Got it loud and clear!
Thank you Maria.

 

Thank you for sharing your knowledge.