if its LNIB its worth some $$, the last one i saw sell was ~ $250 or so and thats been 3 or 4 yrs ago, and i also saw a used kinda beat up one sell for $150 or $200 again several yrs ago.
IIRC BM didnt make a lot of them for some reason and they have always been collectible, they are a lot smaller than a real brend though i almost bought one myself a few yrs back but i found out the blades a lot shorter than the brend is so i passed, it was the long blade which attracted me in the 1st place.
but anyway that it would sell for +$300 doesnt suprise me.