Since we moved from monthly to annual-only subscriptions, we've increased our gross revenue month over month.
The best part of this is it's large majority organic traffic rather than CPC. We've been slowly ratcheting back our paid ads and investing heavily (adding team members, increasing keyword research, and upping content output by 2+x) in blog content. Seems like it's working, since this august is the first time we grossed $10,500+ in a single month.