Thanks for the responses.
I know CarMax supposedly has "no haggle" pricing, but do they ever accept lower offers?
I found a dealership with a decent selection of lower priced Crossfires closer to my new home in Dallas: Bonham Texas Dodge Dealers - Bonham Chrysler Home Page I guess I'll check out CarMax while I'm in Houston, offer them a reasonable price and leave if they insist on close to $18k.