Why is it that some of the millers prefer to buy cereals from neighbouring countries?

Imports directly compete with local produce since Botswana is a net importer of grains. Millers are free to import if imports are cheaper. BAMB is faced with a challenge because just like the producer and the food processor, it is exposed to market or price risks i.e. prices often collapse, while BAMB holds expensive stocks. The Act requires BAMB to set prices that are fair to both farmers and consumers, and this is a difficult task due to competing expectations.