From our local (multi state) Auto Trader/Muscle, Classic & Sports car trader magazine:
01 GTS 5,900 miles $50,000
01 RT/10 7,254 miles $57,000
00 GTS 20,000 miles $45,000
97 GTS B/W 7,700 miles $54,000
96 GTS B/stripe delete 24,500 miles $48,900
While the above are asking prices, not sales prices, I think the point is that low mileage means a lot. Any Gen II that can be found in the low $40's range, with reasonable mileage and NO STORIES is an anomaly, not the rule. Over time, the standard of what is considered "low mileage" will rise.
IMHO: If someone wants to buy a sub 10,000 mile car and make it a garage queen, their value will probably hold rather steady for the foreseeable future. If they start racking up mileage, the value will decline. Long term, I believe, the cars will do very well in the collector community. Why? Because they are in video games, toys, Hot Wheels, even Easter baskets at Wal-Mart, now. As the younger generation ages, Viper's will become their Cuda's, GTO's, etc. The car they wanted as a kid and will eventually have.