Blunder - I first began to collect about 5 or 8 years ago, then took a 2 year break in the middle. I'm just getting back into the swing of things now and I realize how much Trout rookies go for - I probably opened up a few and threw them away as commons
Wonder - nothing major, I just try to soak up as much knowledge as I can about cards, so I can get good deals when I go to shops or garage sales and whatnot. I went to a shop owned by two older gentleman outside Minneapolis a few months back. Happening to look through the .25 pile, I found a Dirk Nowitzki Bowman's Best rookie refractor /400. Raw that card sells for about 50 bucks. Profit margin = 19,900%