This presentation discusses California State University Fullerton's transition to an e-preferred approval plan for acquiring monographs. They found that using a single e-book aggregator (EBL) resulted in some print books being received, usually because the e-book was not available on EBL. The top 8 publishers accounted for over 25% of print received. Expanding the plan to include additional e-book aggregators like EBSCO and ebrary could reduce print receives but may increase costs. Adding publisher platforms directly may have limited impact due to lack of DDA options and embargo periods. In total, using a single e-book aggregator had the largest impact on the number of print books received.