I hate to say it, but rip all the boards out of it, pull the motors, and SCRAP IT!!!
You will get more money for the scrap than you could probably sell it for.
Then.. You have the boards and motors which take up almost no room, and might be able to be sold on e-bay or here.
Pull the vises too, you can at least get a few dollars for those.
But.. Probably worth more as scrap. Don't know the make, the control is beyond obsolete, its
a boat anchor.
sorry.. but that's the truth.