Maybe some of the jade is a holdover from 1.0, but I thought it seemed odd. I do a decent amount of mining and crafting and never have jade on hand because it's pretty worthless (though I did pick some up after 3,0, but still not much). A lot of the other items are really low level and it makes some sense that people have a bunch of that. Even hippo skins. Personally I have 198 from ventures and things (I began throwing them out/ selling them when my retainer had a full stack of HQ and NQ) because one of my retainers seems to love them. Still, with shards leading the market and a few oddball items you can certainly see the RMT influence.