Excerpt: . If you're lucky you may be able to find a used one for much less. I saw some used ones around last time I checked. The Yamaha YPG 535 (Yamaha DGX530) comes with some features that are typical of grand pianos. In particular, it includes 88 keys, and a Graded Soft Touch keyboard. I was impressed with the stereo-sampled grand piano voice it comes with. It sounded beautiful on the keyboard's, stereo, two way speaker system.