I now have the XV6800 and a XV6700 with no service. It works great as a PDA with wifi and has lots of installed software. But I'm not sure what to do with it. Has anyone here had luck selling older PDA's? I also have a bunch of great accessories, 2 additional batteries, extra cradle chargers, a seidio car cradle, memory cards etc... Does something like this have value or am I best just keeping it?