nickel sulphate

I often look at the price of nickel,and wonder why there are not two prices for it ,obviously most of the nickel in au is battery grade nickel sulphate against the Indonesian stuff which is suitable only for stainless steel,yet it seems to be just sold as nickel at whatever the price.I feel its possibly better to leave the nickel in the ground until the price really rises when the battery side of things gets going,I am sure then we will see the nickel sulphate get a big premium.PAN/POS and others mothballed their plants rather than sell it for peanuts,if wsa and a few othere had done the same we would not be looking at these cheap prices and all our mines would have by now been getting a good price.Looks like the manafactures of batteries will be incresing the content of nickel in their batteries,so only good times ahead .