The site belongs to you more than with Wix or Squarespace, but not completely. The Webflow pricing page states that code export provides clean, semantic HTML and CSS files for your dev team, and that content managed in the content system (the CMS), meaning collection pages and items, can't be exported. Export is also listed under the Core workspace, not the free one. So you can leave with the skeleton of the site provided you have a developer to keep it alive elsewhere, and the product sheets or articles managed in the CMS have to be rebuilt. The domain must always be in your name, and my guide to domain names explains how.
The template doesn't save you the learning. The 7000+ templates announced on Webflow's page are built by its community of creators, and each one comes with its own logic of classes and styles that you have to understand before changing a heading without breaking the rest. A paid template is bought once, then the time is yours, and a popular template ends up on other sites than yours. A site coded for your business starts from your services and your customers, and no two of my clients get the same site. You never see the editor, you write to me and the change arrives.
A well built Webflow site is fast, and I won't claim otherwise. Speed depends mostly on the person who built it, on stacked animations, loaded fonts, uncompressed images and scripts added page after page. A community template rich in effects can weigh a lot on a phone, and you have to know where to cut. With a site coded for you, I decide every line that loads and I commit to the result, every site passes a check on speed, accessibility and technical SEO before going live, and I send you the report. The difference comes from having someone whose job it is answer for the result every month, whatever the tool.
Webflow's price reads on two lines, the site and the workspace. Basic at $15 a month over three years is $540 for hosting alone, to which you add the paid template if any and the Core workspace if you want to export, plus your hours of learning and updating. My Essential plan costs €1,405 over three years, and that amount covers design, code, hosting, backups, updates and your changes delivered within 48 working hours. Hosting against hosting, Webflow costs less, and the honest comparison is the complete site with the work included. To place those amounts, how much a website costs details prices by method.