When I bought my last n800 off of eBay, it came with this

http://www.adesso.com/products_detail.asp?productid=298


a Adesso Flexible Mini Waterproof Keyboard (black)

it works with USB host mode, and it has a standard usb plugin on it, so youd need an adapter to use it with the tablet (sorry, i use the adapter, not hte keyboard)

anyway, if you want to pay shipping, its yours
I never use it, and would be happy to see it go to a fellow tableteer