I read the first in the series and it was okay. The world of Gor is pretty cool and the story was fun. I have read that later books get more and more misogynistic and more like porn, but I thought I'd give this one a try.
To be honest, I have not finished it. I quit maybe a quarter of the way into it. Maybe sometime I'll come back to finish, but I have the feeling it won't get much better. Early on it started to read like some adolescent fantasy written by a kid who couldn't get chicks in high school, interspersed with some pretentious philosophical ramblings. But the action was pretty good.
So, two stars for what I have read so far. As I said, maybe sometime I'll return to it, but I'm in no hurry.