There are a couple of strategy and product questions that need to be addressed before considering paths forward for revenue generation. I've only taken a cursory look at your website.
Who are the most common end users and what is their purpose? Does offering packages or bundles make sense? That would be a simple upsell. E.g. One report $99, five reports $350.
Who in organizations are buying these reports? Strictly salespeople?
Is enterprise partnerships a path to pursue? If the target is international salespeople - is salesforce.com a logical partner? Do you have the ability and experience for enterprise level partnership agreements?
What makes sense for you to give up financially per sale? Does paying an internal salesperson on a primarily high commission percentage make sense and is it feasible?
Could you white label this to an Owler type competitor (assuming they are one) or become the horsepower behind a similar product. Don't give away all of your secret sauce but that type of agreement can be a huge step up rather than a salesperson knocking on doors and delivering steady but noticeable and profitable results.
While not necessarily an answer - I hope this outlines considerations and tradeoffs and isn't just telling you SEO techniques.