If it saves you at least 15 minutes a month then it sounds like a bargain.
I'm tempted to give it a shot, but i don't get what the paid version would actually net me. I'm toying with the Playground now, and in many (most?) cases the TALA version (which i think is the paid version?) seems identical to the Dagre version (Mermaid, i think?)
I'm also having difficulty finding where i'd even buy it. Hmm
edit: Ah https://terrastruct.com/tala/ might have some of my answers
Eg: https://text-to-diagram.com/?example=chess&b=d2&layout_b=dag...