Ask HN: Sales Strategy If the User Is Not the Customer (Buyer)

Sales strategy question: for one of our products (Bugfender https://bugfender.com) we have the "problem" that the user is many times not the buyer. To be more specific the user is the developer and the buyer is his boss or the boss-of-his-boss. We're wondering how we could help, support and maybe even empower our "free" users to convince their team leads and bosses to buy a paid version of Bugfender. One idea we had was to create a simple fact sheet PDF that they could send to their boss. But I'm wondering why and how they would look at it in the first place? What would the message be? Do you have any examples of other companies using this approach? And PDFs you liked in particular? And of course all other kinds of ideas are also welcome :-)