A growing number of metal labels have set up a Bandcamp. 20 Buck Spin has done a great job integrating theirs with the rest of the website. Check how the releases section has links to the Bandcamp page and notice how the widths of the website pages matches the width of the Bandcamp page. It's those small details that make a Bandcamp work with an existing site.
My favorite 20 Buck Spin release at the moment is Laudanum's The Coronation. Some of the of the most gloomy and desperate sounding music I've ever heard. It almost feels wrong to call it beautiful, but it is. Beautiful and crushingly heavy. Here is a great review from Michael Wuensch over at Last Rites, who echoes that sentiment, only much more eloquently "The Coronation ebbs and flows from ominous darkness to clouting heaviness like waves of rumbling sickness".