Costco: Secrets of the Cash N Carry

It’s the fifth largest retailer in the world – selling everything from bottled water to smart TVs – and has shoppers queuing round the block to enter its giant warehouse stores. In this special programme for Channel 5 we reveal the secrets of bulk buy behemoth Costco – identifying its best value products, showing how the public can beat the rules on membership, uncovering how the company can sell goods so cheaply and revealing that flogging products isn’t actually how Costco makes most of its profit.