What are they worth new? I have no idea. But $240 sounds cheap.
Pull cords, funny you mention that, just busted one a few days ago, I always got spares. Then the neighbour came over with a busted one on his weed whacker .... what a mongrel one that one. Had double springs as was an easystart Talon crap thing, ping! Flat spring everywhere.
We switched it out for a second hand spare he had. Bugger them easy start things!
Good luck with ya sale, good back up saw.