I'm just starting to learn keyboard/piano and came across this deal that looks pretty solid. The Casio CT-S410 is going for $299 (down from RRP $529) - 43% discount.
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From what I can tell, this seems like a decent starter keyboard:
AiX Sound Source.
Horizontal Bass Reflex technology boosts the lows and, together with custom speakers, brings powerful and vivid sounds
600 built-in tones
200 built-in rhythms, with Auto Accompaniment featureTouch Response – add intensity and rich expression to each note you play
MIDI Recorder – record your performances and play them back
Pitch Bend Wheel – allow manual variations in pitch, giving your performance more flair and emotion
I think Casio keyboards are generally well-regarded for beginners, and this price seems competitive compared to other retailers.
I wouldn't recommend this for anyone looking to learn piano, as it doesn't have weighted keys. Otherwise it's a great keyboard.