I'm not sure what the value of these things is anymore, but they were originally purchased 2-4 years ago, and their specs vary greatly. Trying my best to research the value of them, but certainly open to just about any offers at this point. They all have dual monitors (some are Samsungs and some are Apple). The specs are below:
I have three remaining, each with one apple monitor. One has a nicer 24" new apple monitor. The other two have the older 23" apple monitors, one of which is a little scratched. Each system comes with a backup battery power source (although that costs a bit to ship if you aren't in LA).