This report provides a comprehensive investment appraisal of Aspiradora Limited's potential project: manufacturing the Supanova vacuum cleaner. It estimates annual incremental cash flows, compares the Supanova project against expanding the existing Darkstar product line using Net Present Value (NPV) and other appraisal techniques, and addresses challenges in mutually exclusive project selection. The analysis favors the Supanova project due to its positive NPV, suggesting it will generate greater value for shareholders. The report concludes with a recommendation to continue the existing product line at a lower scale and invest in the new Supanova product, while acknowledging the importance of accurate cost of capital predictions and the benefits of economies of scale through expansion.