Not sure what you mean, the album is free. You can listen to it entirely on Itch, Youtube Music, and Spotify. Either way, I'm very glad you loved the soundtrack.
Viewing post in The Weapon - Impression Composing Jam #4 jam comments
It has a listed price on BandCamp because of distributor / lisencing protection. You can download it on Itch and listen to it for 100% free though.
If I set the price to 0$ it'd open up the doors for false claims, I've had this issue with Jam submissions in the past that I put on streaming services (Primarily with Apple Music).
But yeah, you can listen to this and download it 100% free.