Surveys of consumers have shown that many Mexicans buy from because of the frequent lack of bargains, social interaction, and customer service in formal stores. According to one survey, over 90% stated that they have bought merchandise from a , with the average family spending about 300 pesos per visit. The most common items sold in include groceries, beauty supplies, clothing, appliances, electronics, prepared foods, tools and used goods. About a third of Mexicans buy at least some of their clothing and shoes in .