A different design of a die. Still has the same probabilities of a normal die to ensure fairness.
Please note that this is a prototype design, Shapeways™ has to create every single one from scratch, so the price is indeed expensive for something the size of... whatever that's about 1.8cm.
I am the original designer of this and I declare it public domain.
If you want to mass produce this by creating molds, I'd suggest buying a metal or glass version.