If the subject is English bespoke hammerless ejector or extractor guns, I'll vote for the ejectors, they seem to have overall better finish and attention to detail. I suppose if the buyer could afford an ejector, he would also pay extra for those nice touches that set guns apart.
In regards to the usefullness of the ejectors, they're nice at the target range, less distraction and wasted time pulling out empties plus it typically is not littering to let them hit the ground. In the field ejectors are usually unneccessary and lead to littering (once they hit the ground, that's where they stay). Also if the ejector springs make closing the gun take significantly extra effort, it becomes tiresome. I shot an AYA 10 that could throw empties six feet but closing it in a pit blind was a real PITA.