Amazon offers Prime members the Beverly Hills Polo Club Men's Shirt 3-Pack in White Crew Neck, White V-Neck, or White A-Shirt for $9.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $5.48.) That's the lowest total price we could find in any style by $3. They're available in sizes S to XL.
Note: Most of these items are temporarily out of stock, however they can still be purchased at this price for delivery when available.