May 29, 2009. /Lesprom Network/. Botnia will increase the price of NBSK (Northern Bleached Softwood Kraft) in Europe. The new price is $630, the company said in a statement received by Lesprom Network. The new price is valid as from June 1, 2009 and until further notice, CIF Botnia's usual European ports. The other terms remain as agreed.