Looks like it's a big CK perfume sale on Amazon. Perfect timing if you want your perfume/s to be delivered at home.
There are some more CK perfume options (men and women) on sale as per the first comment (and as below). Thanks @Qmar and @ASHGOON!
Calvin Klein CK Be Eau de Toilette for Women, 200ml $21.44 -> This looks like a pricing error as 200ml is cheaper than 100ml.