At present Arctic furs can sell for 75 - 125 gold (server dependant) although obviously sometimes can be less/more. This price could well drop dramatically when 3.3 comes out so it is advisable to sell off stock piles sooner rather than later.
Additionally the already highly priced Heavy Borean Leathers may be going up in price to meet the arctic price drop in the middle and as such, a good investment.
Either way it's probably best you're all aware of this change as there is money to be made.
