There are different variations of errors on Baseball cards. Some more desirable than others. Errors such as mistakes made on information on the card will only be worth more money if the mistake was corrected, and the card that was printed in the fewest quantity is worth the most. Not necessary the card with the error.
Other errors are made during the printing process. "Flopped" negative image, Wrong back, Blank back, printed half off center, or combined with another player to name a few examples. There are a descent amount of collectors that collect these type of errors. Prices will also vary based on the popularity of the player as well. If the error on your 2002 Topps card was never corrected it will not add extra value.
The value of 1993 topps traded baseball card set unopened is $20.
Milton bradley topps baseball 1968 trading cards value
Not a thing
$50,000
$3.141592654
$80.00
That's his 1959 card, with a circular picture of Hank's face set on a yellow background. The book value for the card is $150.
I would guess about $150.
25 cents
.02 if your lucky
50 dollars
1964 Topps baseball coins setThe 1964 Topps baseball coins set consist of 164 coins A complete set has a book value of about $1,000.00 in Near Mint condition and $300.00 - $500.00 in Very Good - Excellent condition, Key coins in the set include Mickey Mantle, Roberto Clemente, Willie Mays, and Hank Aaron. To get a value for a specific coin include the name of the player and coin number in your question. See Related links below for a complete 1964 Topps baseball coins checklist.