An auction is the process of buying and selling things by offering them up for bid, taking bids, and then selling the item to the highest bidder. There are a number of websites that offer lapel pins for auction. Simply visit the desired online auction site and search for the items you are looking for. For example, you can view all of the olympic pin auctions by typing "olympic pins" in the search form.
Auction Sites for Olympic Pins
Ingrid O'Neil's Olympic Memorabilia Auctions are now online in a new format including selected photographs and more detailed descriptions.
Coubertin.com Olympic Collectors' Auction offers additional Olympic pins and merchandise that you can bid on.
General Auction Sites
Two of the most popular online auction sites are ebay and Yahoo.
Delcampe.com brings together an international community of collectors in a single auction site. Established in 2000, it offers selling services for lapel pins and many other collectibles.
Abzeichen-Auktion is an auction site for all types of lapel pins (in German).