The design sets the price.
Four designs carry a small system behind them (dated entries or orders) and cost more on your domain. Everything in them works on the free plan too, and the paid plan adds the same things on every design: the design sets the price.
WebEvery other design
The paid plan above: your domain connected, no Nova line, Signature motion once you pick it, and the hero video on designs that have one.
Light systemBlog & Editorial, Courses & Tutoring and Nonprofit & Church
The same paid plan. These designs also carry articles, courses and events with a real date and a page each, and the Entries panel in your account to add and edit them. That works on the free plan too.
StoreProduct Catalog
The same paid plan. This design also carries a cart, an order page, the Orders panel with each order's status, an email per order for you and the buyer, and a pay link per product (Stripe, PayPal or your bank's; Nova keeps 0%). That works on the free plan too.