News sources have reported that as little as two weeks ago, his 2004 autographed Donruss cards were trading for $25 – not any more.

Arlington, Texas-based Donruss produced about 300 of the autographed Phelps cards in 2004 and about 5,000 “common” cards not bearing the American swimmer’s autograph, Donruss spokesman Scott Prusha said.

A search on eBay shows the current bidding:

michael phelps (Category: Olympics ): michael phelps (Category: Olympics )

• 2012 TOPPS OLYMPIC EVENT PIN Michael Phelps Swimming

US $26.57 (13 Bids) End Date: Sunday May-20-2012 19:17:01 PDT Bid now | Add to watch list

• MICHAEL PHELPS 2012 TOPPS OLYMPIC HOPEFULS AUTO SWIMMING LONDON

US $88.00 (18 Bids) End Date: Sunday May-20-2012 19:19:57 PDT Bid now | Add to watch list

• MICHAEL PHELPS 2012 TOPPS OLYMPIC HOPEFULS USA FLAG PATCH RELIC SWIMMING

US $23.50 (11 Bids) End Date: Sunday May-20-2012 19:25:30 PDT Bid now | Add to watch list

• 2012 TOPPS OLYMPIC TEAM Pin/Stamp/Medal HOT PACK Michael Phelps? Hope Solo?GOLD?

US $11.99 (0 Bid) End Date: Sunday May-20-2012 19:46:07 PDT Bid now | Add to watch list

• 2012 Topps Olympics Michael Phelps Event Worn – Used Memorabilia SP

US $39.99 (0 Bid) End Date: Monday May-21-2012 10:11:54 PDT Bid now | Add to watch list

• 2012 Topps Olympics autograph Michael Phelps swimming

US $139.99 (0 Bid) End Date: Monday May-21-2012 20:45:45 PDT Bid now | Add to watch list

• Michael Phelps 2003 Rookie Review card PGI 10 Team USA Olympics

US $19.99 End Date: Thursday Jun-14-2012 23:13:36 PDT Buy It Now for only: US $19.99 Buy it now | Add to watch list

• Topps Michael Phelps 2012 Autograph On Card Auto

US $81.00 (8 Bids) End Date: Tuesday May-22-2012 10:26:59 PDT Bid now | Add to watch list

• SI FOR KIDS MICHAEL PHELPS RC

US $22.99 (0 Bid) End Date: Tuesday May-22-2012 17:49:29 PDT Bid now | Add to watch list

• 2012 TOPPS US OLYMPIC TEAM OLYMPIC HOPEFULS MICHAEL PHELPS MEMORABILIA CARD

US $7.05 (4 Bids) End Date: Tuesday May-22-2012 18:54:11 PDT Bid now | Add to watch list