The puzzle you recieve will have smaller gaps between the pieces, it has been slightly re-designed to remove them. It is more challenging to solve than a 2x2x2 in it's normal shape, and also more challenging than Meffert's pyramorphix.
It is based on an eastsheen mini 2x2x2, which can be purchased in a few places, including here. Keep in mind that you will have to glue the pieces you recieve to the 2x2x2, and sticker it yourself. Please contact me to purchase one pre-assembled. See the twistypuzzles forum topic for more details and a lot of pictures.