The present invention discloses a method and system for computerized ordering at least one product being a part of a final shopping list. The system comprises a first computerized trolley configured to facilitate a user to select at least one product among products being offered by one or more shops associated with the first trolley, thus giving rise to at least one first computerized order line corresponding to the selected product and being a part of a first shopping list; at least one second computerized trolley, each one of said second trolleys configured to automatically generate at least one second computerized order line matching to said first order line and comprising a product being offered by one or more shops associated with the second trolley, said second order line being a part of a second shopping list; wherein the final shopping list is configured to be based on said first shopping list or on said second shopping list. The method comprises providing said first computerized trolley, providing at least one said second computerized trolley, and facilitating compiling the final shopping list on the basis of said first shopping list or said second shopping list.