This section is the shopping and configuration side of the simulator. It tracks the version of the instrument you are customizing and shows the current build price as options change.
Handedness and Range are order choices, while many visual options such as body finish, burst, hardware, pickups, and knob faces are chosen directly on the instrument itself.
Add Current Build to Cart sends the current finish and electronics state into the storefront cart so the build you were hearing lines up with the build you are ordering.