You can buy an individual license for a specific video.
This was a high-stakes pitch. If the client saw a watermark, or even a hint of low-quality editing, the agency would lose the account. They would look unprofessional.
If you search for "Download Shutterstock video without watermark" because you can't afford $200 per clip, Envato Elements at $16/month is your solution.
The only guaranteed and legal way to obtain watermark-free videos is through .