I can’t imagine not getting one of these but after seeing the differences in the colt King Cobra vs the old ones I’m skeptical these will live up to the Python legend. As far as the old ones value goes, I’d expect them to level out and not get lower. Collectors are the ones who drove the prices up and they don’t care if a new one is introduced or not. They’re going to keep looking for that certain one for their collection. If they’re like me, they’ll grab a new one no matter what, then keep an eye out for another.
I think the old King Cobras will hold their value too. The new ones share very little with the old ones with the exception of the name. Both new and old are excellent revolvers though! Colt knows how to make them. They just different.