A designer can ship inventory from one of their retail locations to one of its outlet stores. They do this for inventory that does not sell fast enough or is overstock merchandise - due to seasonal or brand changes, merchandise can be shifted to outlet stores. Another reason could be that a particular retail establishment has gone out of business. This is a way to extend the product life cycle.
Off price department stores work in a similar fashion, but they sell merchandise from many different designers, with possibly Ralph Lauren being one of those brands. Or they could go to a liquidator who has, as an example purchased 5,000 pieces of clothing and then breaks the lot down and sells 100 - 500 pieces at a time to the department store.
Arguably, the best place to buy Polo Ralph Lauren apparel at low prices is eBay. One of the main reasons is the large selection that you have to choose from. Being able to choose from thousands of selections while clicking a mouse from the comfort of your home, makes the whole process pain-free and easy. No wasting money on gas and your purchase is delivered to your front door or where you choose. Sellers can keep the price down because they do not have to incur the cost of retail space. Not only that, but a lot of sellers will make the purchase cost effective by letting you take advantage of flat rate shipping options that are offered through the postal service. Yes, looking sharp without throwing your money out of the window is within your reach. You will not have to put the Ralph Lauren Big Pony back or the Ralph Lauren dress shirts.