Recent advances in understanding of the blood-brain barrier (BBB) suggest that we are entering an era in which basic discoveries of BBB structure and function may be parlayed into meaningful disease applications. The development of impactful human therapies is a diffi cult and lengthy process; nonetheless, many researchers desire to see their work applied to the treatment of human disease. Signifi cant fi nancial reward will follow functional solutions to BBB delivery challenges; however, validating a trans-BBB delivery strategy to support and sustain a clinical program is costly and risky and requires multidisciplinary expertise. Investigators must necessarily garner funding and expertise for such campaigns, mainly through government grants, private investment fi rms, and industrial partnerships. Among the many considerations for researchers looking to advance brain delivery technology are the commercial aspects of the technology and the requirements attached to the funding mechanisms for clinical development. Early choices about delivery modality and target therapy (indication) have important consequences for the development process. An understanding of the forces that currently drive the pricing of therapeutics and the factors considered by potential investors who can fund expensive clinical development programs is helpful for framing a discussion about the pharmacoeconomics of BBB delivery. Complex multimodal delivery technologies may have added challenges for demonstrating safety and signifi cantly higher drug manufacturing costs that can infl uence the risk-benefi t analysis made by potential investors. Both the therapeutic application and the delivery system infl uence the path to generating commercial or government interest in advancing a particular brain delivery approach toward the clinic.