Multiple considerations must be evaluated with a new acquisition or license in biopharmaceutical business development. This case utilizes a fictional company, XYZ Biotech, to illustrate the quantitative considerations in evaluating an antibody-drug combination product in the metastatic breast cancer (mBC) space. The steps shown in this case also include the development of a market model to define the potential size of the market opportunity, a weighted benefit pricing model to evaluate the present price, and a net present value model to estimate projections from the product. The case also engages multiple qualitative considerations as part of the discussion section. It concludes by offering several nuanced questions at the end to stimulate discussion around the analysis, probe additional considerations needed for a business case, and analyze what other elements or issues would drive a decision. In the appendix is a short case summary of key facts for participants to develop solutions and share in class before reviewing the case narrative.