It's a shame there isn't a PDF version of this available. It looks like a lot of fun.
Does the site offer International Shipping? If not, I would happy to get one for you, and ship it to you myself. You can reimburse any costs.
It says the hidden location of the key can be solved from only the book, however, once solved the key must be retrieved to claim the prize. I'm sure if you would solve the puzzle/master riddle, someone would retrieve it for you to do so. I've visited MDI a few times, but I know others who have as well.
Fantastic offer thank you Jenny. It wasn't so much the shipping that was the problem it was the price of the book. Everything here is pretty much double so with added shipping would make it a bit too costly for me atm. I do appreciate your kind gesture though. Best of luck with the hunt.