Having to signup to see the pricing really just feels like a dark pattern though. That may not be the intent, but it's an unnecessary hoop. Why not just put the pricing up there and ask people to sign up for all that other content?
It would really send a powerful message across that you believe in your product if you allowed people to try it without needing to jump through hoops or give up their email address. I personally would be more inclined to part with my money then.
Just so you are aware, I clicked the 'prices', thinking that if they were reasonable, I'd be using it in a flash. Then I got the signin link; closed the tab, and un-bookmarked it. I won't be returning. You may want to think about how you treat customers.
this could absolutely have been a trivial oversight; if they're a rails app it's as simple as a stray line putting an "is_authenticated" before_filter or something on the controller. easily the kind of thing you'd have while dark-launched and then forget to remove later.