 Price Plus X, high in $499,000 and free. Not available with a lease and some other offers. Must trade in a 2010 or newer vehicle and or show proof of current ownership of a 2010 or newer Buick or GMC and or be a current eligible Costco member. Ballot on in-stock units only. Must finance with GM Financial. Not all will qualify. Dealer installed accessories. Extra Sea Giller for complete details.