Kimberly Davison (L) and Elena Evans pay for their groceries as they attend the grand opening of a Trader Joe's on October 18, 2013 in Pinecrest, Florida. Trader Joe's opened its first store in South Florida where shoppers can now take advantage of the California grocery chains low-cost wines and unique items not found in other stores. About 80 percent of what they sell is under the Trader Joe's private label. (Photo by Joe Raedle/Getty Images)