Depending on condition I'd say no less than $75 each. In good condition with wiring harness I'd say no less than $100 each. I have bought many over the past few years and sorta watch them on here and eBay.
With that being said, they are not highly sought after by the masses but they are sought after by the minority so they will eventually sell but maybe not in 5 minutes. Someone is always looking. You could search for WTB requests and contact the potential buyer.
GLWS,
Andy