Information Resources, Inc. (IRI) data contains point-of-sale marketing data from grocery store purchases. These purchases are continuously tracked across all UPC-coded brand-items in all categories.
IRI data is accessible through query pages on the WRDS website, and as SAS datasets on the WRDS linux server.
IRI home page (commercial website)
WRDS Introduction (includes how to get an account)
WRDS Website (to request an account or to login)
WRDS Without Account (on public terminals in Bobst Library)