To answer your question in regards to pricing comparisons, Squarespace is a much better value then Webflow.
You gain access to their development platform, an accessible API, git integration, ecommerce, robust analytics, third party integration, CMS by default (not extra), blogging by default, contributors by default, markdown support, commenting system, etc.
A pretty good overview can be found here.
Does that make Squarespace better than Webflow? Probably not, but from a pricing standpoint, Webflow is one of the most expensive/hardest sells for client hosting, etc.