It would appear there is roughly a $300 premium for the 'bear' moniker   
 
  Haha, yea. Seems like you can buy the same basic knife out of his "Raven series" for half the price. 

Wait a minute... Isn't he using a gerber gator? 
He has used a bit of everything. Saks, Gerbers, dive knives, ect. 
By the way, there is also a Bear Grylls watch if anyone is interested.  
