ORIGINAL: Axel
Had that same issue with a place in Castle Rock. Online it was below MSRP, get down there and they say it was a posting mistake. When I headed home, they had it corrected. Go figure.
Dealers probably do this as a way to generate some foot traffic in slow periods.
This kind of makes me wonder what Challengers are going for nowadays. I have to imagine many dealers would take a good discount off MSRP with the way sales are (or are not).