I'm no longer amazed at the number of people who dislike/criticize Costco, based primarily on the fact that their employees are paid so well (comparatively) and treated so decently. Even if a specific item might be found cheaper at a Sam's/BJ's/Etc., the difference in the average Costco employee's positive attitude and helpfulness, compared to its competition - is legendary.
Costco Jobs Come With a Number of Perks, According to Employees