THE IMPACT OF DISCOUNTS AND PROMOTIONAL CAMPAIGNS IN RETAIL NETWORKS ON CUSTOMER PURCHASE VOLUME AND RETURN BEHAVIOR. Global Economic Review: Journal of Economics, Policy, and Business Development, [S. l.], v. 2, n. 3, p. 11–18, 2026. Disponível em: https://ecomindspress.com/index.php/ger/article/view/306. Acesso em: 19 apr. 2026.