Yamaha PSR-E 343 Piano with power supply, and batteries [$ 125] works completely well. No issue at all.
http://usa.yamaha.com/products/musical-instruments/keyboards/digitalkeyboards/portable_keyboards/psr-e343/?mode=model.
Piano learning book: Keyboard Musicianship: Piano for Adults Book One [Spiral-bound] James Lyke, Tony Caramia, Reid Alexander, Geoffrey Haydon, Ronald Chioldi with CD (utilized at University of Illinois) for teaching. [$ 35] Completely well. No trouble at all.
/Keyboard-Musicianship-Piano-Adults-Book/dp/48.
Both products totally, brand-new simply bought to find out piano about 9 months earlier. Functions perfectly well. No trouble at all.
Prices are negotiable.