The main disadvantage of COSTCO shopping is bulk packaging. The main advantage is you can return the product at any time without a question for a full refund. Their merchandise is excellent quality. The average sale ticket is US$300.00. They are one of the primum company in NY Stock Exhange and their share price is approximately US$600/per share (COST). Last quarter they paid US$15/share as special dividend on top of their regular dividend. Luckly I am a shareholder and a customer in this company. Thanks