Costco offers its members the Eddie Bauer Men's Crosscut Cord Shirt in several colors (Blue pictured) for $18.99 with free shipping. (Non-members pay a 95-cent surcharge.) That's the lowest price we could find by $6, and $14 under the price of a comparable shirt from Eddie Bauer direct. It's available in sizes S to XXL.
Some chains have retired their senior discounts. But these grocers still have deals for the silver-haired set.