There is a 7" screen sized one as well:

http://hott.net.cn/EN/Channels/Products/showDetail.asp?objID...

video of the device:

http://www.youtube.com/watch?v=UXmWFn2m4Rk

(bad video, but it still gives a good idea of what it can do)

That's $92 without flash, import duty and so on, so the price will go up considerably by the time you have one in your hands.

So how well can you type on these things, is it possible to do some coding?

I figure for a small email, you could probably use the screen.

Anything beyond that and you'll have to find a way to graft on a keyboard. Usb or bluetooth ?

For real coding I'd do it with a cross development kit, which is how most phone software development is done.

Android supports bluetooth keyboards and mice. I've tried it with my Archos 5 device... it's quite usable for web browsing.

it'd be cool if you could keep the keyboard physically attached, maybe with a hinge mechanism of sorts.