NOTE: This is a lovely box with an elegant solution. I have solved it a couple of times and reset it. But it does have one problem. The third of the seven steps is extremely sticky. It is hard to make the move. Once the move is made then everything operates as expected, but resetting it and trying again the next day seems to return the box to its original sticky state.
Per the Karakuri website:

The photos will show everything included in the sale.
The puzzle is located in the United States, but I will ship
worldwide.
Customs forms for international shipments will reflect actual
payments.
Payments can be made through PayPal (Friends & Family preferred).
Buyer to pay shipping calculated after auction.
Buyer may choose supplemental insurance at their expense.
Please wait for the updated invoice before making payment.