Walmart has 9-Pack Fruit of the Loom Men's Shirts (white): V-Neck or A-Shirts for $12.34. Pickup in-store where stock permits, otherwise shipping is free for orders $50+, or with Shipping Pass (free 30-day trial).
Alternatively, Target has 8-Pack Fruit of the Loom Men's Shirts (white): Crew Neck, V-Neck or A-Neck for $11.99. Shipping is free for orders $25+ or with REDcard. In-store pickup is not available.