I know this is an impossible question to answer, but (I am asking anyway) - do you believe the price will still remain low for 6n even once they're all sold?
Or be lower for 6n than it is for 4 or 5n? For example 30 or 40% less, considering that while all 4n and 5n may well be sold out at some point, that fact doesn't make 6n as desirable as 4 or 5n was.