Excerpts from 101 Ways to Make Money in the Trading Card Market Right Now! by Paul Green and Kit Kiefer:
1) Sell all the cards you have right away.
Cards are worthless, when you get right down to it. You really ought to be thankful that anyone at all wants to buy the things. They have zero intrinsic value. The only value that they have is the value dealers, collectors and investors apply to them. And if any of these three groups attach what you think is an illogical value to a card you own or want to buy, you’re sunk.
2 & 3) Know what you have. Know what the other guy has too.
It all comes back to knowing what you have and studying what other people have and want. It really isn’t that hard to do, and it really pays off. And after all, how are you supposed to sell everything you have right now if you don’t know what everything is?
52) Cut losses.
You […] don’t have to explain your mess, but more importantly, you don’t have to live with it. So you take a big position in Drew Bledsoe cards, or maybe Paul Kariya is your pick. On paper they look great, but maybe, just maybe, things don’t work out. […] You know how to make a bad situation worse? Easy, hold onto those losers. Heck, if they haven’t made it after five seasons, is there any reason to expect a change? Of course not, but people hold on anyway.
91) Sell the strange.
If you can find a buyer for non-Hall of Fame umpires and officials, trophies, chickens and whatever else might lurk in your holdings, don’t quibble about the price, just take the money and run.
95) Dump the junk.
What causes anyone to think that the girls of Hooters, stars of lesser TV shows and even lesser sports figures have any potential? Wishful thinking, maybe. Perhaps a chemical imbalance, or maybe a lower tolerance for hype. […] If you’ve already started with such things, stop now and get rid of what you’ve got because they’re not going to get any better or more valuable.
(These cards represent many of my failures and inadequacies. They reflect anxieties, fears, things I try to forget, things left unsaid and time I cannot account for.)