Galls offers the Champion Men's Long Sleeve Athletic T-Shirt in several colors (Black pictured) with prices starting from $5.60 with free shipping.(Proozy charges $6 via "DN6" with free shipping.) That's $2 under our July mention and is the lowest price we could find by $6. It's available in sizes S to XXL.
These steps will help ensure you don't outlive your money.