Magically Scramble Eggs In The Shell

I'm dubious as to the worth of these as a specific kitchen utensil; most how-to videos I've seen include a jumper as the sole "equipment" required. Maybe two rubber bands on either side to help prevent movement would make it even easier.

> The design process took months of careful exploration and testing. We did loads of sketches and built functional and aesthetic models by hand and on the computer.

The resulting product is quite nice aesthetically, but is it worth $18?

Cool; I'd like the model for 3D printing my own!