Average price of a new car these days is just over $30k. So the Mustang is not far off the mark. You're looking at hyper inflated loaded test models for pricing. Frankly, not figuring incentives, the 15 isn't much more than the 14 on the sticker.
Why all the hate on the 15? Seems most threads in here are heaping hate on it before anyone has seen or driven it. Don't want it? Can't afford it? Don't buy it. Enjoy what you have.
2014 V6 Manual