marketing books on social media

I AM TRIALLING A BOOK MARKETING AGENCY IDEA. It's possible that I might want you every week/month depending on whether my ideas work. At the moment I'm just testing it, so consider this a one-off for now. In your bid please answer the following questions: How much would you charge per week to market published books on social media? Do you have experience of Amazon keywords and campaign settings? (Optional) Do you have other channels you use to market books: newsletters/blog posts/Bookbub/Goodreads etc.? On a scale of 1-10 how successful is your marketing to date at engaging people?