Would 100% try and buy a tool like this as I am the target market, but no way I'm going to go out of my way to sign up and pay for something I can't see value in behind a paywall.. "you and everybody else." Try a freemium or something? Good luck.
Addendum: It's not about the money, it's about the complexity. It isn't worth my mental overhead if I can't see a transparent value of the thing I'm buying. (Then I have to cancel, etc.. )