Perhaps the best (and definitely cheapest) way to structure these types of deals is to shoot for some sort of affiliate structure: If my cost on a tie is $20 and I sell it for $80, let's agree to split the profit with the influencers. That means for each sale we each make $30.

This is more difficult to set up and manage, but it aligns the incentives of all parties involved. If you have an influencer who sells five ties with one post, you can bet they'll be doing everything they can to promote your product in the future.

In a later chapter we'll show you how to create a unique URL. You can give a unique URL to each affiliate to place in their bio - it will look like:

"http://www.someurl.com/?utm_source=aff&utm_medium=instagram&utm_campaign=usernamehere."

Using this kind of a URL, we can track eCommerce conversions by source/medium, and know how many sales came through our affiliates.

In the Admin section of Google Analytics we can also grant "read only" access to our account for the affiliates to see. Just click Admin, User Management, and add permissions for an email to "read and analyze."