I didn't really think about it but yeah it was removed huh? I do hope they bring it back - however I do understand that there is some 'reduction' in value. You can't really make it exactly 1:1 as no vendor or store would ever do that. Maybe a fair change would be to keep the "10 Marks" consistent. Purchase: Buy 20 materials for 10 marks Trade: Sell 50 materials for 10 marks. I think if they brought it back that way, then people would be happy!