cheap torpedo suggestions

I enjoy torpedoes, mostly cause they just look so damn cool, but they are quite expensive. I've seen a good deal on see eye for Gurkha's, but I'm a little leary of that brand (I've only liked one kind out of five or six). La Aurora makes these great torps in metal tubes but they're like $15 a pop. Soooo....anyone know where I can get some torps for under maybe $4 each? Thanking you in advance.