Gap offers its Gap Men's Marled Crewneck Sweater in Light Grey Marle for $27.99. Coupon code "SUPER" cuts it to $13.99. With $7 for shipping, that's $41 off list and the lowest total price we could find. It's available in tall sizes M to 3XL. Deal ends January 31.
Note: It's also available in Navy for $16.49 via the same coupon.