Best AI Video Tools for Realistic Commercials (with Unlimited Iterations?)

I’m creating a 30-second commercial for a doctor’s office using quick, realistic shots of people. The footage needs to feel natural and realistic.

So far, I’ve been using Seedance via JXP, sometimes paired with Midjourney. The results have been pretty good, but I’m burning through credits fast since I go through a ton of iterations to get the best version.

Does anyone know of a better platform or workflow for this? Ideally something that allows unlimited iterations or at least a ton of credits. I’m especially interested in tools that produce cinematic, photorealistic video. I don't mind spending about $100 for this project.

Thanks!!