Calm down my friend.
Don't blame the other guy for your lack of preparation.
If you read the book before you buy the coin, and you learn to grade before you buy coins that have large value differences in different grades, you'll be way ahead.
Anyone who doesn't know what he is getting when he/she buys a coin, a stock, a piece of real estate, a sports card, a piece of collectible porcelain, etc., etc., etc., is gambling.
It's just the way of the world that gamblers lose more often than they win
, especially when they are competing with pros.
