It's relatively inexpensive new, it only has 77 keys but for the granddaughter I felt that was enough to learn on. It's touch sensitive, one of my basic requirements, but the volume does not vary as much in response to the force of striking the keys as a real piano. Also there is a big difference in the feel of the keys from the front to the back of the key, it seems to be harder to strike the keys toward the back of the keys. It does have a nice sound and for an inexpensive keyboard, it is quite adequate.
As they are not touch weighted no if you are going to buy a Keyboard to learn Piano on you need touch weighted keys so it feels like a real piano
Web Master UK Piano Page
It was an excellent piano for beginners. Now I have been playing with a NP32 the new model, and is very good as well.
You can easily find the Yamaha NP31-32 for $300 or less, and for that amount of money you’ll be getting a pretty decent digital piano.
I like this review for Yamaha NP-32 digital piano (in spanish, sorry but it is mi mother tongue)
I hope enjoy