I lost a very expensive item (Frost Cloud gem) because my item (Wind Runners) became untradable after trading it to another person for them to insert the gem and trade back.
Apparently I used up my 30 trades without realizing it. My token was still active at the time of the trade. IMC should make it clearer when your number of trades goes to zero or gets low. Change the text to red, list the number of trades remaining in the trade window, make another pop up, or SOMETHING to alert the player that the items will become untradable.

