Ann: Quarterly Activities Report, page-13

of course we are making many assumptions here :

1/ that they only sold 200T during october-december 2016 (even if they sold more, it shouldnt have been a substantial amount, otherwise they would have publicized it)

2/ that they received the full amount of money from their clients before 31 december 2016 (the shipments have been made before 28 november 2016, generally money is sent after receiving the shipment)

In other words, our best guess is that the average price they are getting is 585$ per tonne.

Any other ideas ?