Abstract: Methods and systems for building impulse product shelves in online shopping platforms are disclosed. A user platform circuit and a user network circuit exchange product information with a merchant computing system over a network. The user platform circuit and user input and output devices generate a graphical user interface relating to the product information exchanged with the merchant computing system. A user impulse circuit and the user platform circuit identify available impulse products in the product information exchanged with the merchant computing system, and an impulse product shelf comprising at least one identified impulse product is constructed in the graphical user interface. The user platform circuit and the user input and output devices assemble purchase transaction requests, which are transmitted over the network.