I ordered two at $15 each and received a pair of SP51, current Amazon price, $45.86 (List $60)
and a pair of M11+, current Amazon price $30 or so (list $64.99)
Two good buys, with the SP51 perhaps an excellent buy. Each came in brand new unopened package with full accessories.
Also received a little plastic thingy for wrapping up your earphone cable and a pair of ear guards for the earphones.