Did this article completely skip over the microsoft trackballs? I'm far from an Msoft fanboy, but the wired trackball they had got more use from me and the var

Did this article completely skip over the microsoft trackballs? I'm far from an Msoft fanboy, but the wired trackball they had got more use from me and the various mice I had for many years. I was on a quest to develop a system to use it more and suddenly they stopped making them! I think I got one still in stock somewhere for bit more, and now they are $380 on amazon. Please come back with that design and shape - it was a little longer than the logitech (I think), which gave it a perfect feel for my hand, and made it very stable when on a desk, or cinder block, or pressed against the body.. in the lap or while standing up. Any chance the old Msoft design on that is past any kind of patent stage? I still like the logitech one I have that works, when not at my desk, just because I find trackballs better in general than a mouse or trackpad in mobile situations. I bought two extras of those when I saw they were no longer being carried at the local office box just to be sure to have one if no longer being made. Wish I had bought an extra couple of the Msoft ergo keyboards they no longer make.