Method: Removes price from the dropdown options on sites that do not use the price field.

Method: Adds a down payment option to the dropdown on sites that show down payments instead of prices.

Method: Adds a shortcode

Method: Adds hooks that power the shortcode

Method: If a user wants to order vehicles by price, and the site is showing MSRP instead of price, sort by that.

Method: Creates the HTML output that replaces the shortcode.

Method: change_sorter_based_on_price_display