Your targets are unclear so if this is a consumer product, I would suggest doing this as a free app with Google ads to help monetize - similar to ezgifmaker.com, et al. Capture the email, then gather feedback and promote your new updates directly from there. Repeat use cases are important - will someone use this once or consistently - this is a major factor in your marketing/sales direction.
If there’s an enterprise sales opportunity, you can create a premium account scheme.
I’d refrain from hiring a marketer (like me) as you really need to validate the product first. Users admitting to having your same pain point is still way premature to whether they’ll give you hard cash right now for the solution.
Good luck, I’m sure you’ll do great!
