Is this supposed to be happening? Every year or two, I get offered Numa's Breath on a different planet (great!) plus the trade of 1200 alloys for 1000 consumer goods (worthless, since I don't use consumer goods as a hive mind).
I think I ran into same scenario a while back. Playing with half the galaxy as tributaries, I noticed deals occasionally repeating. Including some unique ones.It was really convenient actually and I'm considering using this in a vassal heavy game to maximize my caravaneer exploitation.