Vox Organ Questions and Cost?

I'm talking about the Vox Organs that The Beatles, The Doors, and The Animals used. I was wondering do they still make them and if they do what are the cost and where can I get one? If they don't make them is there something like it ( the sound of it, the key colors are reversed, and the stuff on the side that changes the sound.)? Or how much do old ones cost and can they still be played on?