Hello I am eager to learn playing piano.So I want to buy a MIDI keyboard for me. But I have searched on the net and found that the MIDI keyboards are too expensive. But I want to buy a cheap piano. Also I want to know that is there any keyboard which will run only using a PC/Tab/Mobile software and is not really a Piano. That means is there any keyboard of PC which will look like a piano but mainly which will be only the input of any particular (virtual)piano software.I think if is there any it will be so cheap.