Main images + A+ content
Taking the "Multi-Angle · One Photo, More Views" template as an example: about 12 credits on Nano Banana 2.
The credit prompt before each generation is authoritative; it changes with model, resolution and duration.
Product photo (upload, or select an image on the canvas) · Key selling points.
A single generation usually lands between one and a few minutes depending on model and resolution; several can run at once, with the limit set by your plan.
Yes. Any shot can be re-run with an edited prompt or a different model; what you already generated stays, and re-runs are charged at their actual cost.