While I was doing the Level Cap Trial 1 I had collected 90 forest, 90 caves drops and had about 25 from the desert. I though after the game saw I had the 90 of the forest and cave drops it was okay to get rid of them. So I sold them out of my bank. I didn't realize what I done until I went back to the caves to do something and I noticed I was collecting again and I knew I wasn't doing any client orders.

Also you can buy stuff you sold back but not drops unless you must have premium service to do that. Yeah I was upset at myself for not checking first but I got over it. It was actually faster getting them the second time than the first time.