I started using Jarvis.ai (Pro) at the beginning of September, and I can tell you that the $119 price point is worth every penny. There is a learning curve when it comes to prompting Jarvis with questions you want help with (my advice: be as specific and detailed as possible for best results), but once you get the hang of it Jarvis makes the process of writing much faster. As Corrie mentions, Jarvis is a tool, but when used well it is pretty amazing.