This is the hidden gold. Premium templates come with proper Schema.org markup (Article, BreadcrumbList). Two weeks after installing, three of my old posts appeared as "Rich Results" (with images and star ratings) in Google Search.
You cannot just click "Update" like WordPress. To update a Blogger template, you have to copy your widget settings, paste the new XML, and reconfigure everything. Most people (including me) simply never update, which becomes a security risk long-term. blogger premium templates
Always— always —download a backup of your free template before installing the premium one. You will thank me later. This is the hidden gold
Buy a premium template only after you have 20 published posts and are making at least $5/month from ads or affiliate links. At that point, the $15–$40 investment will pay for itself in higher RPMs (revenue per thousand views). You cannot just click "Update" like WordPress
