I was reading an article about some guys driving the first one on a road trip and the vast majority of people thought it was a Camaro. It actually does look quite a bit like an older Camaro from the side profile. It definitely looks more like the old Cudas than even the old Challenger.
Dealers always have ridiculous markups because there are always people that have to have the first ones and the Camaro will be no different. Even before the Challenger went on sale there was a guy on the Challenger forums who worked at the dealership and would sell them for sticker. There will probably be a guy on the Camaro forums who will do the same for you so there is really no reason to get gouged other than being a fool.
The Challenger has a plenty good interior for what it is and the exterior is pure sex. I give credit where credit is due!