This question about the multi faceted weapon the sai.?

where can i get a sai with blade in the middle instead of a prong..like elektras...and i dont want the replicas cause tehre to expensive...im willing about a hundred bucks....if u can help me please do if not dont answer..........im not liveing in a fantasy or unsafe i know how to use the sai properly .......i dont need any stupid remarks..its not yahoo opinions.