Developer API | Pricing | Legalities | Track's Audio Features

[Nightree]

Plan

Free

Country

Japan

Device

Macbook

My Question or Issue

Hi,
I want to use Spotify's Track's Audio Features for my recommendation technology logic.
I have read the
Developer Policy, Complying with Spotify's Developer Policy, and Developer Terms.
The "Special Considerations for Streaming" section, along with the Comercial Use section.
But I'm still not sure if it's possible to use it for commercial purposes.
If it is possible , can you please tell me how about the price?And is the logic used to create the emotional features publicly available?