The menukis look very good.
But is gold cast now fake?
In their return policy they write if it's fake you can give it back.
Refund Guarantee for Japanese Swords
When the purchased Japanese sword should turn out to be a fake, you will be refunded, under the conditions that total amount of refund shall not exceed the purchase price and that we will provide no extra services.
Refund guarantee is not applicable to the followings:
a sword with an “expert certificate”, but later it is regarded as a fake by another expert’s opinion,
a sword with no “expert certificate” at the time of sales,
Items sold on a commission basis,
sword accessories such as tsuba, sword guards,
a sword with a mark of “for Iai”, a martial art of drawing real sword; and
items sold at auctions..
Edit: I understand that this is only possible when it is a fake sword.