We moved to Montana from just outside DC in 2017. I have no doubt if I listed it today at double what we paid for it, the house would sell in days.
Could I afford to make the same move today? That depends on a couple of things, including how you define "afford." I don't ask a loan officer how much mortgage I can afford for the same reason I didn't ask the jewelry store owner what kind of diamond I could afford for my wife's engagement ring. I am more debt-averse than most Americans, so my definition of how much house I can "afford" will be more conservative than most.
Having said that, the house we sold back east in 2017 would, no doubt, sell at a much higher price today. I don't think it would sell for twice what we sold it for in 2017, but we'd probably have a few hundred-thousand more in the war chest if we were looking for a Montana house today, so maybe. But I would still be reluctant to enter the Montana market at this time. They have a real inventory problem at this time, so houses are going under contract immediately, often sight-unseen, by an out-of-state buyer. That kind of market is more akin to a frenzy than rational and deliberate thought and I doubt I'd want any part of it. Those buyers may end up fine, but it's more risk than I would likely want to take on.