Yep, that was the first thing I checked, since I know how hard they are to find. I did have to replace the membrane for the keyboard. I bought a new replacement from someone who makes them on sellmyretro.com. It works like new now.
I wonder if one could build a 64-maxi style machine with a little LCD display and USB keyboard in a shape like this. There would be lots of room for batteries and you could replace the local floppies with USB ports for thumb drives.
I had one for about 5 minutes. It was given to me by someone from craigslist or freecycle. Plugged it in - saw the white on blue text. Then, sadly, a white veil rose up from the bottom of the screen and it was no more. It's long gone now. : ^ (