17x17x17 Cube

http://www.shapeways.com/model/64058/over_the_top___17x17x17____3500.html

For years, it was 'proven' that no cube could be made higher than a 5x5x5. Fortunately, Panayotis Verdes of Greece never read that paper when he designed his 6x6, 7x7, 8x8, 9x9, 10x10 and 11x11. Of those, only 2 are in production: the 6x6 and 7x7.

Now along comes Oskar van Deventer with a 17x17x17 cube. No copy has been made yet. But if you're willing to be a sponsor, it can be yours for only $3500.