In an electronic transaction terminal (20), a presenter (601) presents to a customer a product page including a product and an insertion object associated with the product. A receiver (602) receives an instruction from the customer. When an instruction selecting the insertion object associated with the product is received, an inserter (603) inserts the selected product into an electronic cart of the customer. When the product is inserted into the electronic cart, if a transition condition is satisfied, the presenter (601) causes the screen to transition from the product page to a purchase page that starts payment for purchasing products already inserted into the electronic cart. If the transition condition is not satisfied, the presenter (601) presents, along with the product page, an insertion notification indicating that the product shown on the product page was inserted into the electronic cart, and after waiting until an instruction selecting another product is received, causes the screen to transition from the product page to a product page showing the selected other product.