For its members, Costco offers the Nautica Women's 2-Piece Pajama Set in Gray Snowflakes, Navy Fairisle, or Navy Dot for $12.99 with free shipping. (Non-members pay an additional 85 cents.) That's the lowest price we could find for any Nautica women's 2-piece set by $12. They're available in sizes XS to 3XL. Deal ends November 16.