Why Is Episode 12 of Takaō Ameku's Detective Notebook Only Available for Purchase on Amazon Prime?

Why Is Episode 12 of Takaō Ameku’s Detective Notebook Only Available for Purchase on Amazon Prime?

Reader’s Question:
Why is episode 12 of the anime “Takaō Ameku’s Detective Notebook” on Amazon Prime only available for purchase? Isn’t it supposed to be free?

A Curious Case of Episode Availability

Ah, the joys of streaming services! Just the other day, I was chatting with a friend about our favorite anime,