Saying this game suffers from repetitive gameplay is weak. EVERY game ever made is repetetive.
Maybe, but with a limited number of shots and no real modes BSD is more repetitive than most. At least most DMDs. The gameplay is basically just trying to stack the 3 multiballs over and over again. Having said that, I own one, love it, and don't care that it's repetitive. With the lightning bolt flippers my ball times generally don't last long enough for me to get bored. And trying to kill Drac during multi-multi-multi never gets old. But I can definitely see why some don't like it and why you can pick them up so cheap. It's a really tough game with not a lot of bells and whistles.