I live in roughly the same area as you, and the pricing seems to be roughly in line with what other '13 FRS with similar mileage and what not are going for. That being said, none of them are worth that much or will actually sell for that. I'd expect to get closer to $16k. And there are better deals out there. Like this one:
http://chicago.craigslist.org/chc/cto/5693847902.html (A couple ricey things on it, but less than half the mileage and cheaper)
I'm not a big fan of the first sentence in your description or the sentence structure either. It comes off somewhat as being written by someone in their early 20's or younger, which can lead potential buyers to assume it was more likely to have been driven irresponsibly. But that could just be my overly-critical nature, particularly having a background working in marketing.
GLWS