If you are preparing for concrete construction, you will need to plan for the purchase of the right sand. In general, concrete mixes are available for direct purchase. The mixtures are prepared in factories and only require the addition of water before use. However, the cost of pre-mixed concrete in large quantities can be high for major projects. Therefore, if you are building a large structure such as a home foundation or driveway, you will find it cheaper to purchase sand and other constituent elements like cement separately.