I have a voucher with American Airlines for $100 that I don't need. I am willing to sell it for $75. A good deal for you :). The expiration date is 16th September 2011.
Once I get the money, I will promptly email you the e voucher which you can use on aa.com for tickets.
Feel free to email me with any questions.
Happy Travel!

Here is the fine print on the eVoucher
eVouchers are redeemable toward the purchase of air travel wholly on flights operated by American Airlines, American Eagle® and AmericanConnection® carriers for itineraries sold and originating in the U.S., Puerto Rico and U.S. Virgin Islands. eVouchers may also be used for payment of air travel on any oneworld® partner or Codeshare flights designated in flight listings as AA*. They cannot be used for payment of air travel on any other airline. In addition if a credit card is used in conjunction with eVoucher(s), the credit card must have a United States, U.S. Virgin Islands or Puerto Rico billing address. eVouchers may not be used for upgrades, Admirals Club memberships enrollments, Admirals Club One-Day passes, AAdvantage Award Travel or other non-flight products and/or services sold on AA.com.