It's a lifetime license for $15; it's NOT a monthly subscription.
The user spending 11 euros a month on entertainment like Netflix can easily go 2 months without Netflix, which is a luxury, and afford a lifetime license for an incredible productivity tool like this.
Customer support service by UserEcho
TO still works great on Chrome/Chromium.
I don't know if it's actively developed though, and it doesn't work on Brave.