Disclosed are various embodiments for customizing an item search and browsing experience based on a delivery speed preference. Multiple delivery speed options are generated for a client device, and a listing of the delivery speed options are sent to the client device. A user selection of a particular delivery speed option is then received from the client device. An item search criterion is received from the client device. A listing of items selected from an electronic item database is generated based at least in part on the item search criterion and item availability via the particular delivery speed option. Data encoding the listing of items is sent to the client device for rendering on a display.