I have (2) brand-new Radio 10's taken out of showroom cars (put GPS radios in). $50 each including shipping. 10 minutes to install, only 2 tools needed: putty knife or table knife to loosen the dash trim piece and T25 (Torx 25) screwdriver. Plugs right in to all 2008 smarts. You already have the wiring harness and antenna plug in the dash, even if you have a Pure model with no radio, it's all there, ready to plug in to these radios.
These have MP3 CD playback capability and a built-in 6-disc CD changer.