I paid something like $17 shipped for mine.
To borrow a phrase from wualta, they sound midrangey and seventiesish.
They use a driver that pretty much every 2nd tier headphone maker used in at least one model. That in itself is historically interesting.
But while pretty, they aint much to listen to.
Mine are the eventual target of an orthodynamic retrofit. This turned out to be more involved than i'd figured on because the baffle disc is thoroughly worthless and flimsy. I also need to drill out the back of the earcup, since i don't have the woodworking skills to do a woody earcup of my own.
Edit: oh, and regarding the copy in that listing, there is no leather and there is no brass. The metal is anodized aluminum and the headband is covered with wretched cheap vinyl. That one has black plastic parts, mine has brown plastic parts.
I'm planning on repainting the plastic bits on mine with krylon fusion flat black paint, polishing the yellow anodizing off the aluminum, and replacing the headband vinyl with black suede, like my SE-700 repair.