Asus DRW-24B1ST 24X SATA DVD Burner Drive for $18.99 shipped. Here is a screenshot for reference. Note that it comes in OEM packaging, which means no pretty retail box but is otherwise identical. It is capable of reading and writing data on DVD±R/±RW, DVD-RAM formats with 48x CD/16x DVD read speed and 48x CD/24x DVD±R/12x DVD±R DL write speed. Note that at the time of this post, 91% of all user reviews have given it 4/5 and 5/5 ratings. Most places have it for about $22.