What makes this box different from all the others, is that you begin by removing the cube from a box which is just large enough to hold 1 cube. You put the box aside, visible at all times, and do the routine with the cube you took from the small box. After doing the standard die box moves you show the die box empty. Then open the small box which has remained in sight all the time, and take out the cube. There are no false moves or sleights. The clever construction of the box does all the work.
This is a quality item with beautiful wood and brass hardware. Yes it is expensive, but in my opinion well worth the price.