I would also be in category 3. I doubt that anyone is colluding seriously in any SnGs $215 and below. The amount of effort it would take to collude, especially with more than one other person, would probably limit the amount of tables you could play to 1 or 2. So any good players could make more money just by playing more tables than they could by colluding. Colluding also takes up table spots that could otherwise be fish. And if the bad players want to collude, bring it on, because I doubt they would gain any substantial advantage from it. I'm sure some people do it occasionally on a small scale. When I first started playing my friends and I did collude on some $5 SnGs, but I doubt we really obtained any benefit from it. If we had that idea, others probably did too.