One should ague that the insane bit is not the last 4 years of correction, but the preceeding 4, which saw the ludicrous and unsustainable rise, doubling the price and more.
So that is at least 8 years of madness out of the last 8. You're sure you know which way it is going next?
We might well still be seeing a correction to a quite low rate of price growth, but it wouldn't take much say, escalation in the middle east, or a Trump election win, to precipitate an even more severe correction.
And when you're paying £10k for it, it only takes a 3% drop in price for you to have already afforded the alternative.
My point is that you need a crystal ball to "know" that the Rolex is good value.
You don't need that to see that the San Martin presents an excellent value proposition, given the level of finishing on show.