Get 20% off select men's Dress Shirts, originally $13.99-$30.99, at Z8 Clothing via Amazon. The price drops automatically when you add the shirt to your cart. Shipping is free when you use a Prime account or free Prime trial. Shipping is also free when you spend $25 or more. Otherwise, it adds $5.99. These are the best prices we found by $3. This Long-Sleeve Polka Dot Shirt falls from $29.99 to $23.99 in sizes M-XXL. The small size falls from $13.99 to $11.19. Sales tax is charged in most states.