There's not even a single area on https://plus.cnn.com that would answer your question either. It doesn't even tell you it's not free, or have a pricing page either. You apparently would have to sign up for an account to see the pricing.
Edit: Ah, so if you try to click play on a video, it offers just a little info "Plans start at $2.99/month for a limited time only"
Edit: Ah, so if you try to click play on a video, it offers just a little info "Plans start at $2.99/month for a limited time only"