It looks like they're still making them, so they must sell a few. At $500 they probably don't sell too many. There isn't a single one on ebay, either.

Inline remotes are great though. With my minidisc player, I hardly knew how to use the controls on the front. Going on a plane? Throw it in the pocket in front of you, clip the remote on the top of the pocket. Walking around? Leave it in your pocket, and pause/unpause when someone wants to talk to you with far less fumbling.

Matthew