Cramer's 'Stop Trading!': Amazon

NEW YORK (TheStreet) -- "This combination of Zappos and Amazon(AMZN Quote) is so powerful that these bricks-and-mortar retailers are living in fear," said Jim Cramer on CNBC's "Stop Trading!" segment on Monday.

Nordstrom(JWN Quote) might be offering free shipping for the holidays, said Cramer, but "Amazon's a game-changer when it comes to shipping."

Cramer said he recently purchased a coat at Macy's(M Quote), which he intended to pay full price for, and was surprised to receive a 30% discount. And at Pier 1(PIR Quote), he said, near the end of the day, "they will give you a bargain that they wouldn't give you a couple of hours ago."

"Everybody knows you can bargain," he said. "There isn't a lot of inventory in the system, but I think there's an overwhelming sense of 'let's not get caught with anything' at the high-end retailers."

Turning to Citigroup(C Quote), Cramer said it seems "like the government is ready to sell its stake. It just has that feel. It is so heavy."

-- Written by Rebecca Corvino in New York.