This is truly insane, and the explanation if unreal.
From Clint Davis at WXYZ:
In its description for the pants, the company says they "embody rugged, Americana workwear that's seen some hard-working action" and that, when worn, they show "you're not afraid to get down and dirty."
$425 for fake mud. War on work? Just for trust fund babies? It is truly bizarre, but if it doesn't sell, they'll be gone.