Affordable is not a price. I don't want to login before getting pricing.
Integrating a new system requires some effort. And there are some systems, like the one in question here, where there's a real cap on how much value they could possibly provide for me, even if they're perfect.
If I can't see whether the pricing falls in that range before I need to sign up, I'm just not going to seriously consider it for most services.
I don't want to provide my data to multiple services just to be able to compare their prices and find out which one I'm actually gonna use. At first this will lead to countless automated mails from all those "founders" asking why I haven't started paying yet, and if I'm unlucky my credentials end up on haveibeenpwned.com…