So far, I've been playing around with the CMS, but I'm only now building y first Webflow CMS project for a client. This particular client asked me what platform do I use and I had no hesitations or callbacks telling him that I use Webflow. I'm proud of it and I believe that it is my best option for building great websites.
If the client decides to take a peek into the Webflow pricing structure, it will find lower values than the ones I'll charge him montly, but then you also have to value your work. If anything is broken, it will be you to contact the Webflow team to help you manage it... The client will want changes over time... Will have doubts about the CMS use, etc, etc, etc...
Personally, in such projects I don't just make the website and hope everting goes smoothly and independently, so the value upon the Webflow pricing is my fee, for my job, for managing the client. If, despite the platform I use, a client doesn't understands the value of my work, then something is wrong.
Wordpress designers also take charges for their websites maintenance... And from the common client you may already have heard "Wordpress is free" but there is no discussion upon what a Wordpress designer charges for it.
Although, I believe that the Webflow team should be more cautious about managing user expectations. I would expect some more information about planned/future features and a hint if those will be included under the platform or added as an extra charge. This would provide me a sharper picture on planning and a better sense of reliability.
Webflow is growing faster, so the sense of a small, "almost familiar tool" and community are being dissolved on its expansion... Please take notice on that and don't let your users feel like they are not part of the product. We are on the other side of the game, but I like to think that we are still (and will continue to be) a part of it.
Just my 2 cents...