MarkDyson
Blues Hound Wannabe
From his other listings he seems to sell a lot of US Military surplus, so those probably were originally purchased by the US Military for thousands of dollars!
Yeah, that makes sense (especially the thousands of dollars part). Heh.
I've mentioned this elsewhere, but many years ago for my first entrepreneurial adventure I subscribed to a service that specialized in clearing out surplus, overstocks, and the like. It was before the Internet was a household thing, so we'd get info overnight via fax. Each morning I'd pull the faxes, look for stuff that seemed sale-able in my area, and place orders accordingly. Shipments of mics like these would have been exactly the sort of thing on the list.