6pm cuts 16% to 85% off a selection of men's classic button-up shirts, with prices starting at $12.99. With free shipping, that's the best deal we've seen on these items from 6pm in recent months, with many styles at the lowest total price we could find. Discounted brands include Ben Sherman, Calvin Klein, Nautica, The North Face, and more. Deal ends September 13.

A best bet is the Calvin Klein Men's Plaid One Pocket Military Shirt in Blue Print (pictured) for $34.75 with free shipping. That's the lowest total price we could find in any color by $28. It comes in sizes S to L.