Looking to buy good ninja swords?

Hi. I am basically looking for twin ninja swords, both the same size sword, must be sharp with a backstrap, good quality, and try to keep it under $100. I also don't really care if they are straight or curved like a katana.
Update: well i am new to looking at swords and stuff but i found this sword its a katana and can u tell me if its good like if its worth $180 heres the link:http://www.themmazone.net/martial-arts-weapons/yoru-dragon-forged-katana-1060-carbon.html
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