Online shopping is a common feature of modern adult life and is made easy with targeted advertisements, a large buy now button, and pre-entered credit card information. However, these features do not support making purchasing decisions based on what is best for the individual. The current study sought to answer this research question: (1) What are the effects of an intervention package—consisting of a mnemonic, task analysis, and BST when delivered remotely—on the acquisition of decision-making skills related to online purchases among adults with IDD? A multiple probe across participants design was conducted with three adults with intellectual and developmental disability to answer the research question. Results of the study indicated a functional relation between the intervention package and the dependent variable. Furthermore, the decision-making skills maintained up to six weeks post intervention and generalized to novel online shopping websites. Participants, parents, and professionals viewed the intervention as socially significant as indicated by survey responses. This intervention package can be a feasible way to teach decision-making related to online shopping.