 Some Sam's Club members are threatening to quit over a new fee. Beginning August 19th, only online orders of $50 or more will ship for free. Otherwise, there will be a flat rate fee of $8 tacked on. The pushback's been growing on social media. One ex-post accuses the big box chain of taking away benefits. Others threaten to move their business to Costco and even file a class action lawsuit. Deborah Rodriguez, CBS News.