I can tell by the words in the link you posted that they are junk. Know also that good swords will cost at least $240-$300 for cheap fairly good swords. Half decent swords will be more. Good swords will start at several times that lowest price I mentioned.
And one final comment. I am suspect of any person or place that uses the term Katana-sword...... Katana means sword. So saying Katana-sword is like saying sword-sword.
Try cheness for fairly descent katana. http://chenessinc.com
Even better swords can be obtained from Bugei trading company. http://bugei.com
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