I sold my mach 2 yrs ago for 13k cash. It had 15,000 miles on it. I kinda gave it away at that rice, but I had been trying to sell it for a long time and got tired of waiting. Its one of those things, if you don't have to sell it, wait out the top bidder or whoever is willing to pay for it. In my opinion, what you are asking for it is fair, but if you wanna sell it now, go 12,500.
02 yellow GT auto
Mach mods and shaker
Meziere electric W/P & 170 stat, C&L air filter system, Summit & March U/D pulleys, FRPP 70mm throttlebody, Perf Prod. plenum, FRPP alum. D/S & 4:56 gears, Auburn Diff, Alloy axles, Revmax 3000 stall conv. UPR rear upper & lower control arms, Lakewood drag shocks & struts, Eibach rear drag springs, SCT chip & tune, Flowmaster mufflers