The auction began on Monday at 99 cents. By Thursday night, three different bidders had placed nine bids, driving the high bid to $403.
The auction ends Saturday.
Will Smith, Suns assistant general manager, said the auction already has exceeded expectations.
"I thought it would probably come in around the $250 to $300 level," Smith said.
The Suns try to come up with "crazy, zany" promotions to keep the interest of fans, Smith said.
"We always talk about total fan participation as a philosophy," Smith said.
The winner may choose the photo to submit for the personalized card and may make it as informal as he or she would like, as long as it's not offensive, Smith said. The winner also will be asked to submit biographical information to be included on the back of the card.
"It's cool when they get creative," Smith said. "It'll be kind of a quirky little card."
The card will be packaged with the 2006 team set, which Smith expected to be available in June.
The winner also will receive a set and 30 individual cards of himself or herself.
Each set, which will contain 35 cards, will sell for $8 at Suns games and on the Suns' online store.
The Suns have offered the Internet promotion at least two other times.
In July 2004, Jay Wolt of Littlestown, Pa., won his own card in the 2004 team set with a high bid of $203.52. Wolt posed with his Pomeranian, Pierre.
Tony Dahbura of Hagerstown won a personalized card in the 2003 team set for a little more than $100.
Smith said the 2006 team card set might interest fans because the Suns have a top New York Mets prospect in Fernando Martinez. While the Suns are a minor league team, technically, this would be Martinez's first baseball card, Smith said.
The Suns are a Class A South Atlantic League affiliate of the Mets.
The auction may be viewed at: cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=8808593031.