Peace Sells... but Who's Buying? is the second studio album by American thrash metal band Megadeth, first released on September 19, 1986, through Capitol Records.

Peace Sells... but Who's Buying? is often regarded as a thrash metal classic and as an album that gave prominence to extreme metal. It has been featured in several publications' best album lists, including Robert Dimery's 1001 Albums You Must Hear Before You Die and Martin Popoff's Top 500 Heavy Metal Albums of All Time.

This re-issue contains four previously unreleased tracks "Wake Up Deadn (Randy Burns Mix)," "The Conjuring (Randy Burns Mix)," "Peace Cells (Randy Burns Mix)," and "Good Morning/Black Friday (Randy Burns Mix).