I've got a virtually-new Logitech DiNovo Cordless Desktop keyboard setup available. It was originally purchased about a few weeks ago in anticipation of getting a small desk to keep the laptop on without having to use the laptop keyboard. However, we haven't ended up doing that and it doesn't look like we're going to be doing so any time soon, so we're just going to sell off the keyboard set and stick with things as-is for the forseeable future.
It's been used once, just to test it out and make sure everything works as advertised, and thereafter has been stored in its box.
The package includes the main keyboard, the numeric keyboard/calculator and hard slip cover, basic cordless mouse with neoprene case, USB receiver and receiver extension base. It's a very nice setup -- very slim, much like a notebook keyboard. The separate numeric keypad has an LCD display and can be used as a calculator independent of your computer. It also displays the current room temperature. The keyboard and keypad each require 2 AA batteries, and the mouse requires one AA battery. (In general you probably won't be using the mouse anyway -- I never did. It's fugly.)
Everything works perfectly and, as I said, it's virtually new. It does not come with the original box though
Asking $90 US OBO. Buyer pays shipping
More information can be found here:
http://www.logitech.com/index.cfm/products/details/US/EN,CRID=2162,CONTENTID=9575
Pictures of actual package available upon request.