You need only six M3 screws 20 mm or longer. It is easy to assemble but a lot of work to lubricate. You need this part and part 2
. Total price: 540 Euro in WSF. IMPORTANT NOTICE: We are in discussions to bring out this cuboid massproduced. I don't know if it will happen and when at what time.
5x7x9 sticker set in Olivèr Nagy's Shop
Further information at Twisty Puzzles Forum
See the Video on YouTube