[CliffStoll]

My thanks to you Macie. I appreciate your smile and kindness - I hope you got more than your fill of my silly videos.

You're right, of course: As others point out, mine is a hobby-business, and Amazon isn't the best place for it. Still, it was fun having a (small) presence there, even if most of my customer interaction happened through my Kleinbottle website.

Having said this, I'll probably continue this zero-volume business out of my home; the cool thing is how many fascinating people I meet. Just a week ago, a mathematician stopped by and tried to teach me homotopy theory. Good stuff!