A high minimum order can reduce the unit price and increase resources tied up in stock. Convenience depends on the speed of sale, the space available and the possibility of reusing the goods. The only discount on the price list does not describe the entire choice.
I propose to compare the expected savings with the time of stay and with the supply alternatives. Even the frailty of forecasting matters: an unsteady article can leave a supply difficult to absorb. The demand hypothesis used in the calculation should be made explicit.
In a hypothetical example, a retailer can buy standard packages in large quantities or small batches with frequent deliveries. The choice changes if the space serves another more requested category. The opportunity cost emerges considering the alternative use of resources.
The next verification compares the expected stock with the remaining stock. A convenient deal in one season may lose utility in the next. Reviewing the minimums makes it possible to link the purchase policy to the actual demand and the ability of the store to manage it.