My dad, my classmate's family, and I all had one in the early '90s. An old friend collected (probably still does) them and had a variety in his closet. I think we can safely say 'at least around 20' now.

Dad was also in a commodore user group back before the modern internet. Those meetings were always fun.

I can definitely account for 1.

More than 2 but less than 2 trillion.

Lusted after one as a teenager but could not afford one. It was a bit of a luxury item where I grew up.

Not even the taxman?

I got an Amiga 500 in 1989 and adored it for a good ten years.

5 years ago I donated it. To a (computer) museum. That made me feel old.

http://www.bambi-amiga.co.uk/amigahistory/sales.html