Im sorry, i was out of town for a couple days. Im pretty sure i don't have the tree you would be looking for though. The one i would sell is deffinately not in your price range, a couple hundred bucks less. It will make a nice shohin someday though. Theres a pic just incase your interested. Its cheap. Ill let it go for $75. Its 12" tall, but in need of an air-layer and a cut back to make a fat, flat top tree.
I think they might have some in your price range at NE bonsai, give them a call. They have great trees, and i saw some raintrees on their website awhile back.