What's the accepted response to an unsatisfied trade? He sent first, so do i just mark it package received and send it back? Notifying him in chat that sending me a damaged card when the trade was for NM is not acceptable?

edit: I probably should have put this under General

Well I am sure there is something in the FAQ about this but I would take pictures and show the trader and see if you can get compensation or to just undo the trade completely. Baring that there is not much to be done but give neutral or negative feedback