Original Penguin cuts 50% offsale and outlet items via coupon code "OPSALE50". Shipping adds $5, or get free shipping on orders of $75 or more (after discount). Some exclusions apply. Deal ends June 30. A couple best bets, with prices after coupon:
Saks Fifth Avenue Off 5th offers the Original Penguin Men's Striped T-Shirt in White/Multi for $14.99 plus $7.99 for shipping. That's the lowest total price we could find by $26. It's available in sizes S to XL.