Wis. Stat. § 20.908

Except where distribution to or exchange with specified persons, officers or agencies is provided by law, or where the state agency determines that distribution is to be free of charge, any state agency may make such charge for printed booklets and pamphlets prepared or compiled by it as is fixed by it. Such charge may not exceed cost, including distribution cost as determined under s. 35.80, unless a specific price or method of price calculation is provided by law. Such booklets or pamphlets may be retained by the state agency publishing them or may be delivered to the department of administration for sale and distribution.