The income level of the family also influences food-purchasing behaviour. There is an inverse relationship between the increase in income and the money allotted for food purchasing (Kenslea et al., 1985). The labels on the foods are very important. All the prices and information about the food should be clearly marked on the label; the production and expire date, the contents of the nutritional facts, the net-gross weight as well as its preparation, cooking and keeping conditions should appear on the package. In choosing a supermarket, it is important that the sales staff are honest and sincere, the food is properly displayed on the shelves where it can easily be seen, and that there is a clear display of brands and other information. Moreover, factors such as the ease of carrying goods to the car count towards the choice of where consumers will do food-shopping (Engel and Blackwell, 1994; FDA, 1994).