Very powerful software like that is just for $100 life time payment? Comparing with Daemon and SEnuke, GSA is doing really good. But why is it cheap? Is it has any cons? Some say that GSA is not good for tier 1, but i think that if i write the content with hand and spin it manually, then i could have very good tier 1 quality links. What do you thing guys in GSA cuz I'm planing to purchase it?