EDIT: added more specific description of what I liked about it, in an attempt to up the quality of my comment.
We immediately ordered a second scenario after completing the first. The price was worth it for us.
Most people dont go for movies outside those constraints if ever. Movie is rather expensive choice people normally don't do.
I bought a card-based "escape room" game that was the same way. The description makes it sound a little like you'll get multiple plays from it, but in reality it's just a set path. The "cards" aspect was just them cheaping out, instead of making something re-usable.
I plan to let some family play it (and the other escape game we bought) but I still think $15 is too much for a single 1-2 hour play session.