I buy any new OEM stuff from these guys.
http://www.1sttoyotaparts.com/
They are located in Washington so its 1 day shipping to oregon and thats using the cheap shipping option. They are probably the closest to Alaska as well. Im not sure if your totally set on an E locker or not but I put TruTracs in both diffs on my Daily driver and Im pretty happy with them.

If your looking for a brand new E locker...
CARRIER ASSY, 4-Runner, 6 Cylinder, 4WD, w/Locking Differential 96-00
list is $1,190.40
At the place listed above its $857.09
Last I checked you could get it down to 4.88 as a factory item for that cost. When you think about new Gears,Bearing and the locker all factory assembled for $857 its a darn good deal.

My rear v6 Tru Trac was $350ish If I remember.