I'd say 900 is pretty ambitious for it.
My most recent AKA acquisitions were.
FSP 04with all internal cuts and RT Valve and Tadao: dust brown with wear @$600 shipped.
FSP 04 all internal cuts and buttcrack - regular valve and Tadao and a Powerlyte match anno'd barrel kit - absolutely immaculate stormtrooper anno @$700 Shipped.
Picked up the first in 2010 and the other in 2011. I don't expect realistic prices to have gone up. If you were very patient you might get 900, but I doubt it. At that price you are more expensive than a used ego11. Which is the most similar quality gun currently in production.