RE: What is the expected price for the Challenger?
The first thing you should do is take a drivers safety course including behind the wheel training. No offense to your parents, but I question any parent's sense of safe responsibility to their child that would give their blessing to a 16 year old who is in the infancy stages of driving the go ahead on any car that is stature.
Not only that, but the hefty price tag associated with it. Unless you are rolling in dough, I cannot phantom any parent letting a 16 year old tie up 40K or so on a first vehicle, or anything at so young an age.
A pilot doesn't get in an F-16 without first learning on a smaller less aggressive aircraft.
Youth+inexperience+horsepower= Disaster. The more you drive a car like this the more invincible you feel. The more invincible you feel the more risks you take, the more risks you take ......... read your local obits.
The odds are against you, statistics prove it. A responsible parent would be against a car like this for their 16 year old. There are plenty of cars out there to learn on. You're gonna do what ya wanna do, remember this.... For-site is better than hind-site.