I stumbled upon a company called Eonon, anyone ever heard of them? Know anything about them? They're an online trading firm based in Hong Kong, apparently been around since 1999. They have some pretty cool stuff for dirt cheap, like this 2 DIN DVD monitor for $216:
I was pretty curious, so I scoured the internet for a bit and found they sell these regularly on eBay. Found some talk about them on different car forums, and there doesn't seem to be any really bad reviews . . I mean, you get what you pay for, but these things seem to be okay for entry level mobile video. Might be worth a look and some more investigation. It's eonon.com if you're interested.