Nah... one example doesn't do it. Not saying your friend's is worth x, just saying G's are getting cheap and becoming more reachable...
I've seen several examples in recent months go from mid to high 80's (I'd call that well under 100k) that are clean and under 20k miles.... my buddy who has an 06 has shown me some too as it is depressing to him!
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2004 NASA AIX Mustang LS2 #14
1964 Lincoln Continental
2014 4 tap Keezer
Ill have to look again. I can say that I didnt look at prices before I posted this. I guess its just the way the market is. Im sure modded Camaro's are a bit down on pricing also.