17 lbs is what the bathroom scale said--they are not known for accuracy but weigh on the heavy side when I get on it.
Yeah, I know what you mean about shipping--at the rate UPS and FedEx are raising rates, it will become sub-economic to ship relatively low value, heavy items. And if you use an independently owned UPS Store, it gets worse. Someone with access to a commercial account might be able to make it work. Maybe someone relatively local to me will want them and come pick them up.

If not, they can live in the garage for another few years. At least I removed the ancient winter tires so they don't take up so much room.