Hi robinpeck -- welcome to the forums!
BRL is better known as Bernard Levine. He has a forum here. He is probably the world's greatest authority on the value of knives.
You also can always try the search mechanism here. You could search for your knife on the closed forum, Individual Sales, in the Exchange section. And, on the dealer sales. If anyone has been selling them, and didn't wipe out the asking price, you can get an idea of that.