To place an order on-line you must go to a page that is identified as a price list page. Also the Tow Bar Accessories and ReadyBrake pages have this feature. The other pages do not have the shopping cart feature.
Items to consider if this is your first purchase of a tow bar:
safety cables (required by law)
tow vehicle wiring
coiled wiring cable
tow bar cover
drop receiver if your tow bar is more than 3" from level