eBay and Craigslist finds

Does anyone know whether or not it is possible to get a seat post for this? My understanding is that they come with proprietary BMC aero posts, and I can't seem to find one on the web for love nor money...

Puts me off bidding, tho it would be an awesome TT machine.

i think it's a common shape/size for those type of frames.
planet x do one for their frame.