Buy some new tubes & tires, zip tie those cables in place and ride it until you got $50 of enjoyment.
Realistically if you put 30 to 60 Minutes of time cleaning up the wheels with a bit of steel wool polishing the bike making sure everything's adjusted okay, and if it has good tires, I think in my area you might get $50- $75.
In current condition I would say $25-$50.
Good luck. (And I wasn't being sarcastic about riding it.)