Walmart offers the LEGO Technic 4x4 Remote Contol Rock Crawler, model no. 9398, for $160.98 with free shipping. (Amazon offers it for the same.) Outside of the price below, that's the lowest total price we could find by $39. This 1,327-piece set features building instructions for two motorized models with four-wheel steering and 4-wheel drive. It requires six AA batteries (not included).
Alternatively, Toys R Us offers it for $160.98 with in-store pickup only.