Very cool!

FYI, I would pay for this, but $8,400/yr. is a killer for a startup. You're leaving what might be a lot money on the table at the bottom that you could scoop up with graduated pricing. This might also protect you from competitors, because if you leave the low end open, you may get eaten by a copycat offering cheap/freemium. For example, Github vs. Gitlab and Mailchimp(freemium) vs. Constant Contact.

You've made something very cool that I think people will want, and this price point won't be crazy for enterprise folks. Great work!