Yamaha PSR270 61-Key (Full Size Key) MIDI Portable Keyboard with Yamaha Education Suite. Only $50!

Music Making with a Touch of Style
Portable Grand Piano
Superb Sound Quality
6-Track Sequencer
Chord Dictionary
Professional-Style White Cone Speakers
Song Memory
Easy-to-See Backlit LCD
Pianist Styles
One Touch Setting

For product details: http://usa.yamaha.com/products/musical-instruments/keyboards/digitalkeyboards/portable_keyboards/psr270/?mode=model

Excellent condition. Although the A/C Adapter is missing, it still works fine with 6 A-batteries. Or you can get a 12V A/C adapter for $10-15.