This Calvin Klein Cottonwood King Comforter Set drops from $350 to $120 at Macys.com. Even better, enter code KS4GRL at checkout and price drops to $108. Shipping is free (although there is a $3 surcharge). That's $42 less than the next best price we found on any CK king comforter set. This nature-inspired cotton sateen set includes a king comforter and two pillow shams. It is machine-washable and weighs 250 thread-count. Sales tax is charged in most states.