Nordstrom offers the 1901 Men's Extra Trim Fit Dress Shirt in White or Blue Hydrangea for $19.42 with free shipping. That's $20 off list and the lowest total price we could find. It's available in select sizes from 15.5 32/33 to 18 36/37, but not in all color/size combinations.
Also available is the 1901 Men's Trim Fit Non-Iron Check Dress Shirt in Navy Patriot for $19.42 with free shipping. That's also $20 off list and the best deal we could find. It's available only in sizes 16.5 32/33, 17 34/35, and 17 36/37. Both deals end November 30.