i recently saw them for 200 i think it was at jack's. some places also list them as backordered. i have a guy that kept trying to swindle me out of mine.
Unless you are going for a complete stock resto look, stay away. Get yourself a 14"x3" open element with a K&N. This set-up will out perform the old air-cleaners by far. This will free up some good cash for some other speed parts.