Got mine yesterday. It confirms my thought that it's pretty much double what it should cost but the technology is awesome! Luckly, mine doesn't slip at all. I used it over night and the n4 was fully charged and in the same spot I put it in before I went to bed. The angle of the orb is awesome for using the phone as an alarm clock as I can just reach over and swype the alarm off unlike before were I had to pick the phone up. (Not that big of a deal but it's the little things right?)
At work it makes running to and fro from my desk a breeze since I always put my phone on the desk anyway. Now it's propped up and charges at the same time.
In the end, it's probably not worth the money. But since just about everyone reading this is a nerd or geek at some level, (come on, admit it) then yes, you need this orb! All qi charges are overpriced but the Nexus orb feels futuristic and actually works. (Unlike a lot of the complaints I heard about the Palm Pre TouchStone)
Summary: My Nerdhood feels more complete with this orb!