Yes, supply and demand, of course, does affect the price. In my case, the Pearl winter barley is sold at maximum 1.85% Nitrogen content and the Optic spring barley is sold at maximum 1.65% Nitrogen. I doubt if the pearl malt will be going to the whisky industry at that Nitrogen level. It could be mixed with low N barley but their are other factors which will be taken into account such as germination quality and dormancy, also, the amount of spirit produced per tonne of malt is an important factor to the maltsters and this can vary between varieties.
From a farmers point of view, the cream on the cake this year might be the fact that these malting contracts are at maximum 19% moisture content. Therefore, no drying costs beneath 19%. A very good hedge against rising fuel costs and probably the reason why I am not managing to get any success in trying to add another two lorry loads to this contract (from the balance I have contracted unpriced).
When in Rome, do as the Romans do.