Actually they ARE a non-profit - just happen to spend $50 million+ on executive salaries. From Wikipedia --
"Goodwill Industries International Inc. is a nonprofit 501(c)(3) organization that provides job training, employment placement services, and other community-based programs for people who have disabilities. In addition, Goodwill Industries may hire veterans, individuals that lack education or job experience, or face employment challenges. Goodwill is funded by a massive network of retail thrift stores which operate as nonprofits as well. Goodwill's answer to its profit status is "As a unique hybrid called a social enterprise, we defy traditional distinctions. Instead of a single bottom line of profit, we hold ourselves accountable to a triple bottom line of people, planet, and performance."[3]"
I would MUCH rather go to small local thrift shops, where you know where the money goes to and there are no overpaid executives. Plus I HATE fighting other people for "goodies."