I tried this unit, and it sucks. WIRELESS POLICE DASH CAM+LCD DVR CAMCORDER 1280X960 AVI
http://cgi.ebay.com/WIRELESS-POLICE...588?pt=LH_DefaultDomain_0&hash=item35af6296ac
Multiple ebay listings from various sellers - this one is from Ragecams. Average price about 80 bucks.
Light weight, fragile, very cheaply made, the suction cup mount ultimately failed, and once it fell off the windshield, it never worked again. But it was always problematic, requiring constant tweaking to get it to work, resetting, tapping the screen to get an image back, fiddly menu in nearly incomprehensible Chinglish... a total pain.
I have a Gopro, but I personally wouldn't use it as a dashcam. For one thing, it is too easily identifiable as a camera, and once some kid sees it, and recognizes it, he'll want it for his very own. Also, the menu is fiddlesome, and it would be a trial to constantly keep deleting old files.
I'm still looking for an ideal substitute now.
Considering the Drift Cam. In non HD - only about 150