I had the dealer put in the dual (2 dvd players & video game jacks) vizualogic A-1000. I paid $2400. I have checked online for the price and the cheapest I have found them for was just below $1900. Crutchfield has a site showing how to install them.
http://www.crutchfieldadvisor.com/S-OV3taS5lTrm/reviews..._install.html?page=1