More sought after than what? Sub 10k mile trinity gt500's are already in the mid and lower 40's.
I would like to think the Shelby will hold its value better than the 03/04 Cobra, but as of today, it certainly isn't going that way.
they dropped from the Gt350's and will drop again when the next Gt500 is out. after that they will hold true as the terminators did and still do.