It seems that the International Reply Coupons are slated to go the way of the Edsel and Dodo bird if the US Postal Service has their way.
From the ARRL web page News section:
11/06/2012
If the US Postal Service (USPS) gets its way, it will no longer sell International Reply Coupons (IRCs) after January 27, 2013. According to the October 23 edition of the Federal Register, there is not sufficient demand for the USPS to continue offering IRCs to customers; however, per the Universal Postal Union (UPU) regulations, the USPS must continue to exchange (redeem) IRCs that have been purchased in foreign countries and presented at USPS facilities. The current Nairobi model is valid through December 31, 2013. Comments on this proposed change will be accepted through November 23, 2012.
IRCs provide foreign addressees with a prepaid means of responding to inquiries, solicitations or other types of communications -- such as QSL cards -- that are initiated by US senders. IRCs are exchangeable for postage stamps by postal administrations in member countries of the UPU. Each IRC is equivalent in value to the destination country’s minimum postage price for an unregistered airmail letter. The purchase price is in the US is currently $2.20 per IRC. -- Thanks to The Daily DX for some information.
