That looks realy nice Chris. I have the Imperial one and it is a great operating and looking loco, I dislike the whistle though so I don't fire it often up but the rest is fantastic. I also ran it on O54 and O72 and it looks great. I plan to get a premier DMIR one if the price is right.
I hope the OP can find what he's looking for. keep and eye on ebay, I've seen them go for sub $400... about 6 months ago I saw one go for $250 or $280 and it sold in like 4 seconds....