Today only, Macy's offers the Calvin Klein Men's Liquid Touch Cotton Polo Shirt in several colors for $39.99. Opt for in-store pickup to avoid the $9.95 shipping fee. That's the lowest price we could find by $5, excluding the mention below. It's available in select sizes XS to XXL.

Note: Nordstrom has it in Cadet Navy in limited sizes for $29.97 plus $7.95 for shipping