LG GH22LS50 22X SATA DVD Burner (Black) for $19.99 Shipped
LG GH22LS50 22X SATA DVD Burner (Black) for $19.99 shipped after code ZZFBLACK and this $15 rebate. Here is a screenshot before the rebate for your reference. Note that it comes in OEM packaging, which means no pretty retail box but is otherwise identical. It usually goes for about $30 or more.
