I'm quite sure there were more than 200k sold in North America.
For example the A500 was the hottest selling in the
Christmas season of 1991 bar none. As I recall one
particular chain, (now defunct) Montgomery Ward had a big dispute with C= about paying for the units they moved that year that played a part in C='s eventual demise. I dont remember the specifics. I think there was a similar dispute with AAFES who also sold tons of them.
If I remember correctly there were like 7,000,000 A500s sold.
However- since I was stationed in Wildflecken, Germany when I bought my A500 and took it home
with me your estimate of the German market is
inflated by at least 1.