i think more about economic side of the things, how can be profitable for all parties (producer, transport company and supermarket chain is bare minimum) to sell me 2l bottle of soda for 0.19€, it's taking quite a lot space weighing 2kg, producer is about 150km away, yet all three parties make profit on this product? the letter itself (flavored soda) has probably lower value than packaging is packaging, transportation and storing in supermarket taking space of other products.

is there product which would take more space and weight more while being extremely cheap as soda drink? i can't think of anything as large and cheap as bottle of soda