If you have a large quantity of common cards, it often best to sell them as a group package instead of individually. Valuable cards should be sold individually.
Unless you have a crystal ball, you never know the exact time when an athlete's card is at peak demand. The market is unpredictable, and certain events in an athlete's career can increase interest in the card. When in doubt, trust your gut feeling.

EBay, an online auction site, has categories dedicated to selling sports cards. Sell your cards individually or in sets, or put up your entire collection on the site. You will need to scan your cards in order to post a picture for your auction.

Answered by Jateen Gutta , an ibibo Master, at 11:10 AM on March 02, 2009