I dont really think it has anything to do with whether someone built theirs or bought it, it depends on whether the person is a jerk and a $#!Q@&! to begin with. I personally do not have the time nor the ability to build my own but I don't apologize for that. I know my limits(at least most of the time) I admire those that have the patience of a saint and the ability to build their own but i will never be one of them. Does that make me less of an enthusiast becuase I didn't build mine? - I don't think so. I have wanted one since I was 5 years old and when i could almost afford to own one I jumped.
In the end I think a lot of people would agree it can cost the same. The SPF I sold someone got completely done and ready to drive for half of the build cost. Tell me that isn't a good deal for someone.
It someone doesn't like you or your cobra - walk away and be thankful you aren't married to him!