Mar 11, 2010. /Lesprom Network/. Södra announces $40 per tonne price increase for softwood pulps. The new price is $930 per tonne. The price increase is valid from April 1, 2010, company said in a statement received by Lesprom Network. “Pulpmarket remains very solid with strong market balance”, says Ulf Edman, President of Södra Cell International.