You guys can save yourself a lot of money if you root and use the SixAxis app in the playstore. The app lets you pair an existing PS3 controller via bluetooth and only costs $2.53.
Just bought this today and tried it out, it's a breeze to set up and install. Got the SNES emu and loaded up Mario and wow it feels great getting that old feeling back those hours spent on those machines. I recommend this option for those who are rooted as you have wireless control. You can also use the PS3 pad as a mouse as well if you wish.