Bought four some time ago, keeping two and selling two. One is brand new in labelled box and the other is opened but barely used gathering dust.
These are a special version without the dustcap and with the phase plug, meaning lower mms and higher sensitivity. T/S parameters and a comparison of the curve as received by AE is attached.
The cost new would be double now (including shipping, long wait and AUD exchange rate down the tube).
edit: They're actually in Sydney for pickup there, but can take to Canberra for any Canberran whos interested.