Save money on purchases over the Internet is well known that buying products over the Internet is very possible that we can save money on our purchases, the Internet allows us through search engines and Web sites, search and compare prices and deals. Auctions, sale Another way to save is to visit auction sites, exchange or buying and selling that we can bid and / or purchase products with very good prices, provided you have the patience to search and track. Cashback or cash Recovery A new way to save money by buying online is through Web Cash Back or recovery, they buy these sites recovered a portion of the purchase, registration, etc., the system is that these pages comprise a number of sites which pay a commission on sales, registration, reservation, etc. and this commission is shared with the consumer in some way, may be in cash through redeemable points. Central Purchasing A step beyond would be a Shopping Center, it can meet all points above and can also reach sane with other companies, such as professionals, manufacturers, producers, traditional business, so by purchasing all the partner sites estrus Central consumer can recover some money from their purchases. T he main purpose of a shopping center, is to produce and manage permanent discount means to encourage and promote the consumption of products and services offered by the Affiliated Companies. One of the great advantages of a Central Purchasing is to be focused to bring together partners – Consumers can reach out more (commission), so that is very attractive to business. .