They probably also have a couple thousand dollars of "dealer add ons" they tack onto that advertised price. Good thing you asked for the OTD before driving out there
Nitrogen air in the tires, as indicated by green caps on the stem valves.
Looks like the same items the dealer in Vegas tried to sneak in, except they were charging $2,995 for the same "package." And they only brought it up after negotiating on the price. No thanks.
How would the dealer know this? Unless is he was a Jeep engineer, or part of the design team, I would take anything they claim with a grain of salt. Whatever he claimed is strictly his own opinion.