It seems like you are using all boilerplates provided by laravel itself, like Jetstream and Inertia? Just curious how is Larafast different from me just spinning up default boilerplates for free? Laravel's ecosystem and default boilerplates have saved so much time already.
The difference is in Payments part, faster sync between payment systems and project, blog section with controls from admin panel, Themes, components ready to build beautiful landing page in minutes. SEO configurations, sitemaps, schema.org, etc.
You can still do all this stuff by yourself, but it saves a lot of time.