The Amiga was a bargain in comparison, but it was not without its flaws, like all early machines. I had an A500 with a 1084 monitor, and the flicker at high res was bothersome to me. I later upgraded to an A3000 w/VGA monitor, and it was a vast improvement. I ran at 640x400 for everything at that point.
I think you are underestimating the price of "flicker fixers" at the time. I looked up the price of a Microway flicker fixer in an old Amiga World from 1988: Over $500. You also had to add an a VGA monitor: another $400.