REI offers its REI Co-op Men's Adventures Travel Long-Sleeve Shirt in Midnight Sky for $43.93. Opt for in-store pickup to dodge the $5.99 shipping charge. That's $16 off list and the lowest price we could find. It's available in sizes S to XXL.

Note: It's also available in Oregano in size S only for $28.83 with free in-store pickup.