A method of shipping at least one child-resistant medicate container via a carrier includes providing or obtaining at least one child-resistant medicate container including a front sidewall, and an opposing rear sidewall, a right sidewall, an opposing left sidewall, and at least one locking mechanism. The method also includes creating or obtaining a flat-rate shipping package from a carrier, inserting the at least one child-resistant medicate container into the package, and closing the package to enclose the at least one child-resistant medicate container within the package so that the package is generally flat and acceptable by the carrier for a flat-rate shipping. The method also includes causing the closed package to be shipped or transported by the carrier at a flat-rate.