The product would be a review of your digital marketing plan and current set up. It would be a one time fee that includes a full work up on your website, product (eg. if you have a web app can you leverage it for SEO?), email automation, paid search, etc.

I'm thinking pricing might be around $500 and it would probably be done within a week.

Would be done by a seasoned professional with years of agency and client side experience.

You would end up with a custom report that goes over actionable thing you can do to get immediate lifts in sales.