The present paper aims to examine if variables widely studied in B2C contribute to building strong relationships in B2B markets. Moreover, it analyzes the existence of differences across retailers related to percentage of purchases from the main supplier. Through a personal survey to retail store managers regarding their relationships with their main suppliers, a structural equation model is estimated through PLS to test the hypothesized relations between retail equity, value, relational benefits, trust, and commitment. A multi-group analysis is performed to test the moderating role of the percentage of purchases from the main supplier. Three types of relational benefits identified have unequal influence on relationship value. In particular, special treatment benefits and social benefits, together with retail equity, emerge as the main drivers of value in the relationship between retailers and their main suppliers. The percentage of purchases from the main supplier plays a moderating role in some of these relations. This research provides evidence in the sense that, in the relations held by retailers with their main suppliers, retail equity contributes to relationship value creation. Relational benefits are relevant in building B2B relations since special treatment and social benefits have a positive influence on value that is positively related to trust and commitment. To build strong relations with their customers, suppliers of retailers should mainly concentrate their efforts on building brand equity and providing evidence of the existence of special treatment benefits beyond the service delivered, in view of its ultimate influence on customer trust and commitment.
