Why per-second pricing adds up
A generated clip is short, so a one-minute video is four to twelve separate generations. Each one can come back with a warped hand, a drifting face or the wrong product, and every retry is billed in full. Then you still need a script, a voiceover, captions, music and an editor to stitch it together.
None of that is a criticism of the model. It's simply the cost of asking AI to invent every pixel of every frame. Most explainer and social videos don't need that, and paying for it means you make fewer videos.