The Sales Product Catalog Online via GPO Access is updated daily. The SPC database is created by GPO to identify publications for sale by the Superintendent of Documents and to provide information on the content, characteristics, price and availability of such documents. The Sales Product Catalog contains citations and annotations to United States Federal publications, subscriptions, posters, maps, and electronic products offered for sale by the Superintendent of Documents, U.S. Government Printing Office. A typical entry includes the title, issuing agency, price, and availability of the publication.
Subscriptions are also available.
Most of the documents listed in the SPC are distributed to a number of Federal Depository Libraries, where the documents are available for free use by the general public. There is at least one Federal Depository Library in each Congressional District. Records remain in the database for 1-2 years after a publication goes out of print. All orders must be prepaid. Methods of payment include MasterCard, VISA, GPO Deposit Account, Check or Money Order.