Bungie is doing a really good job turning agent xur into a useless agent. This guy hasn't sold anything worth the trip for as long as I can remember.
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No keep him around. Even if he isn't selling a weapon or armor that I want, he is likely to have engrams &/or heavy ammo synth. I like the engrams, even though there is really only 1 exotic piece of armor left that I want (obsidian mind), I am happy to trade the Motes of Light for a chance at my gear, or the more likely exotic shard.