Sabu Schuh & Marketing, the German buying group, increased its centralized invoicing by 7 percent to €96.3 million in the first quarter of 2010 compared with the previous year's period. The success came partially from new members and the expansion of existing members with new or bigger shops. Retail sales grew by 12.8 percent. Sabu's operating profit was up significantly ? due to increased commissions and cost cuts that came mainly from its alliance with its new strategic partner, Intersport Germany, the country's leading buying group for sporting goods retailers, which acquired a 50 percent stake in Sabu and a 25 percent in RSB, Sabu's affiliated bank at the beginning of 2009.