Review on Bilz Lope Puzzle: A Challenging Brainteaser for All Ages by Kenneth Martin

Gave it to my son for Christmas. He's one of those people who as a kid could usually solve a Rubik's Cube in 1 minute, so I didn't know if he would do it in adulthood. He didn't read any of the instructions on the box before beginning the puzzle, and it took almost 15 minutes to get the money. Since it can be sealed and reused later, it was definitely worth watching someone do more for their money than just open an envelope. It has play money (comes out at the top) when it arrives, so all you have to do is slip your check, cash or gift card into the same slot and remove the play money. You don't actually have to solve the puzzle to get your gift.