Wellington Realty interview questions

Initially a very standard interview process for the first round. Second round the Owner/Managing partner left me waiting for over and hour. No big deal that happens. The interview lasted for about 3 hours of grilling me on my accounting knowledge and the owner practically boasting about how difficult of a person he can be and past issues. They requested my salary requirements which I provided, however, when I received the offer letter they low balled the offer by $20k per year. Their reasoning is that the "discretionary bonus" would get me up to where I needed to be. I promptly declined and they said they would discuss a counter offer but never got back to me. From what I can tell I definitely dodged a bullet.