Classic: Don't sweat it.......this is a ruff crowd at times. People have a right to ask whatever they want for their cars.......what they end up getting is another story, however.
It looks like your guy has a nice car.........clean, popular stroker engine, nice rims, VERY low miles.....but it's not a 60K car. As mentioned earlier, he may want to check out the cars on CobraCountry. Personally, I wouldn't put much stock in what the cars are going for on Ebay.......could be people that REALLY need some cash and looking for a quick sell. There is an SPF on there now with a 38K "Buy it Now" price, but it's a much older car than yours, has a 351 crate, a stereo (which a lot of Cobra buyers frown upon) and has 31 THOUSAND miles on it.
Your guy may want to drop about 10K off his asking price and go from there. Heck, someone can go to Dynamic Motorsports and order a Brand NEW SPF, put a well built 408 or 418 from a reputable engine builder in it, and walk away for a lot less than 59K...........as long as they don't mind the waiting period (and at this time of year - especially in Michigan where you're at.....I doubt people would mind waiting a few weeks.
Just my 2 cents anyway....... Good luck!