In the majority of shops you will find small objects with a very low price per item, just think of ironmongery or nail charms. Your customer could either be one who needs big amounts of such product or one who needs just a couple of items. Yet, in this case, shipping so few would require too much time if compared with the profit you would make (If any profit at all). And not to mention, shipping costs that would be much higher than the price of the purchased products.