It wouldn't be an infinite decay even in a world with spherical cows because the ice mass is the value decaying and eventually the ice is no longer heavy enough to be called a glacier.
Which makes estimating this particularly tricky (and pointless) because there's no obvious point at which a mass of ice turns from "glacier" to "not glacier". Better to pick something erring far towards "totally obviously not glacier" as a reference point.
Their prices are artificially low due to their manufacturing pollution which negatively affects the entire world. Maybe consider environmental parity tariffs against those polluting countries. Or is The West too addicted to cheap stuff?
I guess that depends on the definition of a glacier. If the ice/snow completely melts then I assume that would count as 100%. Even if it is replenished the following winter, if it all melts again the following summer then I don't think anyone would call that a glacier.
