Humble Bundle is a good site for games with great prices.
Redirects you to the Blue Apron website. "Blapron" is both words 'Blue' and 'Apron' combined.
While Valve may not be the best, the site is safe and official
Used this site since 2015. It's very actively moderated and updated.
Links directly from Amazon if you went under "Get to Know us" then clicked "About Amazon"