I'll tell you one reason a 95 cobra won't well very well because for $9K you can get a pretty decent LS1 Camaro 6 speed with under 100K miles. Now a mint coupe, yeah they will easily go for $10K with light mods.
Another reason, because gas prices are what they are right now.
One more, the 95 Cobra wansn't like the 93 Cobra, 94-95 they made them in a much higher quality, plus people are more turned on by the DOHC motors from 96-98. The 93 cobra is unique to any other mustang ever made. IMO, they should have just made the 93 Cobra the new GT and ditched the whole SN-95 thing and the 4.6.