Today only, Amazon offers its Prime members select MP3 Albums for $4.99 each via coupon code "GOPRIME". That's up to $9 off (the average savings is around $5), with most albums at significant price lows over iTunes and Google Play. Available titles include Michael Jackson's "Triller", "The Best of Billie Holiday", Sara Bareilles' "The Blessed Unrest", and ... 2Cellos' "Celloverse".