Macys has the 5-Pack Calvin Klein Men's Cotton Classics V-Neck Undershirts (White; sizes S - 2XL) on sale for $24 with free in-store pickup or free shipping on $25+ with Star Rewards Account (free to join). Also on final sale: 

• Jockey Men's 4-Pack Cotton Full Rise Briefs 1 Bonus Pair (White) for $11