Commissary spending limits exist at every level of the correctional system and are enforced regardless of how much money is sitting in the inmate's trust account. Having a fully funded account does not mean unlimited spending. The caps are in place to manage inventory, reduce conflict over goods, and prevent any single inmate from accumulating disproportionate amounts of commissary items that could be used for bartering or pressure. In the federal system, the Bureau of Prisons sets a monthly spending limit...