From the website:
Iowa Prison Industries IPI is the job training program within the Iowa Department of Corrections, helping offenders in our work programs have the skills needed to be successful citizens upon release. IPI is 100 self-funding. Purchases from IPI fund our valuable inmate programs, furthering the missions of the Department of Corrections and Iowa Prison Industries. IPI's products and services are only available to purchase by governmental agencies, school districts, non-profit groups and employees of these organizations.