First of all thanks for the answers.
Okay so these are made by some chinese wannabe smith who tried to make it look real. Apart from the impertinence to call these real Japanese swords... I wonder what properties such a "fake" blade would have? I mean to make them look authentic they have to use a similar forging process (at least the obvious parts like folding the metal). So it would be more elastic, harder to break and sharper than, for example, some machine made display swords or iaitos, wouldn´t it?
By the way I do not intend to buy one after having read your comments (bootlace :D ).
(Sadly I don´t have the money to buy a real Japanese Katana either.)