Still not sure how telling customers that they are paying above...

Still not sure how telling customers that they are paying above average for the product helps the company. Short term this strategy may help the SP but will not help the company long term.
They are currently looking to ship 15,000 tonnes per month (although only 30,000 in the June quarter stated in the last quarterly, but this will still put a nice little profit in the bank). With the increase for 1.5 expansion this figure will hopefully increase to 52,000tonnes per month. Shareholders or potential shareholders may be getting nervous but that is the fear part showing. I think that after the significant rain the shipments will iron themselves out and all the negativity is just helping people accumulate.
Inflation may have increased the cost of production by a significant amount but still no where near the increase they are getting for their sales.