Agribusiness is an important sector in the Brazilian economy due to its contribution for the gross national domestic product growth. The country exports several agricultural products and is the world leader in soybean sales. The merit of this success is shared by the various members in the supply chain, which lead the local agriculture to high international levels of competitiveness. However, despite these advances, Brazil has poor infrastructure, especially in farms grain storage facilities. This bottleneck, coupled with a poor road system, result in losses and wastes that occur throughout the production process, increasing costs and reducing competitiveness in a global level. As a result, many farmers hire cooperative services. It is observed that such services are often too costly or of limited transparency. Thus, despite the huge resources involved, and the need for integration of new activities in the post-harvest process, producers consider investing in own storage units. A case study was conducted in the state of Mato Grosso do Sul, using the Activity Based Costing (ABC) as method to compare the current situation of two farms using cooperative post-harvest services with a new structure integrating the post-harvest stages. A literature review on conceptual marketing strategies revealed potential gains with this integration process. The method also includes a strategic-marketing evaluation of other additional gains with the integration. It is concluded that investment in own grain storage units creates potential gains for farmers in the forms of cost savings, freedom for post-harvest sales decisions, and an increase in income with new services.