The couple of complaints that I have with this product are outweighed by it's price. The cube has a lot of friction but has become a lot easier to move with some lube.
The product I received had a manufacturers defect, the corner piece that's supposed to have the hole for the keyring, only has one hole. This means that in order to connect the cube to the key chain included in the box, you have to split the corner piece tiles.
But like I said before, I only paid $2.95; I'm content with my purchase as the cube still can be secured to a keyring, just not how the manufacture had intended.