Hello! I'm focusing my collection on commander cards, and I use tracking for any trade that is $40 or above. Also, when I'm trading a card valued at $25 or greater I expect a nearly equal (3/4 ratio or better) valued card in return. For example, I'd trade a $40 card for a $30 card and a $10 card, but I wouldn't trade that card for two $20 cards. I'm looking forward to hearing from you!