Within hours of the former president's mug shot photo going viral, multiple sellers, including the Trump campaign, started selling T-shirts and mugs.

The retailer promoted from within, naming Brian Burnett chief merchandise officer and placing Molly Hartney in the new role of chief digital officer.

From vintage band tees to limited-edition drops, Amazon's Merch Shop is an untapped goldmine for official artist gear, up to 30 percent off for Prime Day.