Dude I know that feel. I had an entire ultrapro card holder/bag thing full of my 2 competitive decks, full playsets of FNM promos from stuff I had won, signed Wrath of God, full 25 foil of every land, and a few other signed cards including Shadowmage Infiltrator...probably more than 5-600 bucks in there all told. I went to make a phone call and came back and it was gone. Wasn't gone more than 3 minutes.Fucking won a tournament at Channel Fireball on Tuesday and when I went to collect my prize I forgot to put away my deck. Now some punk kid took it. Long day at work and my own absentmindedness. The store owners aren't really being helpful.