He would cost seven thousand, but with a power supply, of course - this is his true price category. Suitable for finger training, pleasant pastime, solfeggio. For piano lessons, don't even think about it. Pros below: Compact, lightweight, nice looking. Can be used as a MIDI keyboard. Has some cons: The speakers are small, so the sound through them is a squeaker. But in headphones or through good acoustics - decent enough (except for the piano: well, it's not Yamaha or Korg).