From me doing trading buying at a trader and selling to another mostly doing imperial trading seem to get very little XP. I have a +3trade outfit that give +20% XP 2 bird out that give another +6% XP plus trade pack that give Life +10% XP. I seem to be getting about 1% trade XP for 70 Million so it take 7 billion to make a level I am at level 16 now have all trade Knowledge but 1 because you need level 17 to get it. It seems like they nerf it to where people that did normal trading will never get any were or it is bug. Also trading crates should have never been part of trading they should have been like imperial cooking where you made something and turn it into an Imperial crate guy.