Don't want to burst any bubbles, but depending upon condition, in my area you might find a buyer at $25-$40, but only if tires were good and it was clean and ready to ride.
On more than one I've seen the plastic Shimano shifter break right where the cable exits, making it useless and hub itself has been problematic.
Might have some appeal if you live near a college campus or just want a "beater" bike, but otherwise you don't have much.
Unless you have sentimental attachment or parts laying around to fix any problems you might want to donate it to a bike co-op or Rescue Mission type establishment.
Or if you enjoy mechanical type things have a go at putting it in shape and keep it for a rider.