MOST designer stuff on ebay (louis vuitton, Dolce & Gabbana, Versace, Prada, Coach, Dior, Gucci) is fake if there are multiple items of the same thing, in lots,  at extremely low prices even though they are "new", and if you get the item you may notice the lack of good quality which is the difference between fakes and what is authentic.  Most fakes even claim to be authentic.  If its from NYC, China, Peru, Japan, or Taiwan the items are more likely to be fake.  Not everything is fake most authentic things look expensive and are usually at higher prices.  Remember:  you get what you pay for