As one of its daily deals, THAT Daily Deal offers the Like a Boss T-Shirt in Silver for $5.99 plus $2.99 for shipping. That's $19 off and tied with our February mention as the lowest total price we could find for this t-shirt. It's available in sizes S to XL. Deal ends May 17.
Of note, this shirt is also available in sizes XXL and 3XL for an additional 99 cents and $1.99, respectively.