Item trading will not be as safe and secure if outside the premium members community. Becoming a Premium member is not only the first step of building ones credibility but is an avenue to many opportunities in finding valuable collection variants and finding the missing piece a collectors ever dreamed of. One special feature is get notified first when one on the collectors wish list was listed for trading. The Collector can then pitch or offer right away an exchange of that item for trade.
The Premium trading facility will not only assure good trading experience but the satisfaction it brings of getting ones wish list crossed-out.