Abstract: A system and computer-implemented method are disclosed for optimizing product purchasing to enable consumers to efficiently locate and purchase multiple goods and/or services. A centralized product and price discovery system employs a computer implemented method for determining an optimized purchasing plan using user defined and system defined preferences including the cost of individual products at different locations, product specification differentiation (size, weight, origin of manufacture, user rating), and the cost and/or time to obtain the products from those locations. The optimized plan depends on such factors as the type of transportation employed or the desired maximum distance to be traveled to obtain all the products. The system also improves a vendor's ability to understand the purchasing behaviour of consumers (by region, interests etc.) including the current demand, pricing and frequency of purchases and the type of products being purchased together.