Make that closer to $700 (extra battery, SDHC class 10 card, mini-HDMI cable). But it's pretty cool. The stills look awesome on my PNC7000, although I'm still learning framing and composition and parallax (and to keep my fingers away from the lenses, which is harder than I thought it would be). The video is disappointing, as others have noted. It really doesn't look like 720p. And until I dig my tripod out of whatever closet it's in, I can't keep the camera still enough which makes the video look even worse.
So after a few hours, I'd give it five stars for 3D stills, two stars for 3D video.