Thumb Score: +20 Costco Wholesale has for their Members: 4-Pack Kirkland Signature Men's Boxer Brief (Black) on sale 2 for $23.98 after $10 off savings when adding 2 or more eligible items to cart (automatically applied). Shipping is free. Thanks to Community Member SDkimchi for finding this deal. Note: Add 2 or more select eligible apparel items to cart on the same order to receive $10 Savings.