I have a 2013 with a 427 stroker and your price is a little more than I paid but pretty close. your car is newer so I would say you are in the ball park. As far as taking care of your car I would suggest you find some way to get under it and keep a eye on things
oil leaks loose fittings fuel leaks keep close eye on rear axle flange bolts near the pumpkin. Not hard to do once you get in the habit while you are down their you can also clean helps keep the car looking new. Good luck.