No advice, but just from looking at your pricing options - do you actually get interested parties to click on the "get in touch" button for the Enterprise tier? I wonder whether the difference in appearance to the other tiers provides an additional (albeit small) mental barrier. That, combined with the psychological incentive for clicking on the "Business" option (look, it's our most popular one! and it has a differe…
Regarding the Business tier being highlighted, that's because while using PriceTable ourselves, we have found the the feature set it offers actually lets one get the most out of the product. :)