Tails is a drag and drop page builder built on Top of TailwindCSS. You can drop components to create a page that you can export.
Absolutely, you can try out tails for free; however, if you wish to access all the components and export the page you'll need to upgrade your account.
Implementation in your project is very simple. You can use the exported page as a starting point, or you can copy and paste the HTML into your own page.
You have unlimited use to the templates used in Tails; however, you cannot re-use the templates to sell for others to use.