https://m.youtube.com/watch?feature=youtu.be&v=ubumcwaLEnQ Mobile device link
https://www.youtube.com/watch?feature=youtu.be&=&v=ubumcwaLEnQ&app=desktop Laptop link
I know 11 of the 14 puzzle box designers. All great guys.
I got to play/solve one of them at the IPP. Another stumped me.
Here's the deal: the whole set will be auctioned off 3 times, not on eBay, but on a private site that only puzzlers get to see. A similar auction occurred for the Apothecary Box Puzzle. I believe 2 sets were auctioned off for about $10,000 each.
Yes it's pricey, but it's more substantial than bitcoin, etherium or the hundreds of other forms of artificial money. It's a good investment. Seriously.