I don't buy it. I have nearly all obtainable exotic weapons. I need red death, no land beyond, invective, hard light, pocket infinity and patience and time. Invective I just need to buy special ammo synths and it's done. Probably not gonna buy no land beyond or do any more exotic bounties. My point is, I have every other exotic and bought not one from xur. Maybe I'm just very lucky with drops, but I can't believe that THAT MANY exotics are in my "drop table" as you say. It's just random luck. That being said, I enjoy having a badass arsenal to choose from, but it's almost too much. Having to choose between gjallahorn and literally any other exotic is bad enough. But picking between icebreaker, suros, vex mythoclast and gjallahorn is impossible. I wish exotics were more rare and I had less of them. One other thing I've noticed though, I almost never get duplicates. Maybe I just play too much. ????