Costco Wholesale continues to offer extra gourmet and natural food, including the imported Sabatino Black Truffle Duo I picked up on Wednesday afternoon. Imported from Italy, a Sabatino Tartufi Duo -- Whole Black Summer Truffles and Truffle Sea Salt -- was $19.99 at Costco Wholesale in Teterboro on Wednesday. The parking lot and store have been packed on Wed...