I am in a sorority and my dues were not even close to that. I paid $300 a semester actually, and the majority of that we see come back to our chapter in different ways. Living in the chapter house was MUCH cheaper that living on campus, which was beneficial because I am in no way rich. Also, most clubs or organizations on college campuses require some sort of dues, it is not in any way limited to Greek life. As for your second point, I have plenty of non-greek friends, and many of my sisters do as well. I consider my sorority sisters my closest fiends for many reasons, but our bonds are in no way based on money.