Im thinking about selling my atari 400 it is in very good condition it comes with a 5 button controllor with a number pad it has 16K and I modified it to play games with the lid up it and Im also including the basic cartrige power supply and a RF unit. Its a great computer Im only selling it because my dad recently bought to atari 130 XE s and I need room and money for and Atari ST. How much do you think my computer is worth and how much do you think and ST would cost