@nikitonsky The first screen shows the base configurations. These are the models/prices you see online or at any dealership. They are usually available in stock.

The second screen is where upselling happens. Any hardware modifications you make there, will make it a built-to-order (BTO), causing not only the price go up but also the shipping date.

Fun fact: even authorized dealers need to go through that second page (behind a login), if they want to sell anything else than the base models.