Are unopened baseball cards more valuable than those that have been open, if so how do you determine what cards you have?
How much is a 1991 Brett Favre card worth?
How valuable are baseball cards?
How valuable are Michael Jordan cards?
What are error cards?
What are the most valuable NBA cards?
What is the value of a Brett Favre rookie card?
I have 3 I would like to sell.
On places like Ebay and SportsBuy, most Brett Favre cards are selling for around $1-2 a piece. Autographed cards seemed to valued a little higher.
Brett Favre cards are very valuable depending on the type. For example, there is one type of Brett Favre card that sells for almost $2000.
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