Men's t-Shirts on Sale
A best bet is the Fail Whaling T-Shirt for $8 plus $5.95 for shipping. That's $12 off and the lowest total price we could find. It's available in men's sizes from S to 3XL and in women's sizes from S to XL.
FreshPair charges the same price. (Search for "Ralph Lauren T-shirt 3-pack" to find them.)
A best bet is the Arrested Development Men's Bluth Crest T-Shirt in Black (pictured) for $15.38 plus $4.99 for shipping. (Search "10018392" to see it.) That's the lowest total price we could find by $4. It's available in sizes XS to XL. (It comes in XXL for $1.50 more and in 3XL for $3 more.)