My Mercari and Ebay buys

Yes, that coach is rare. Much sought after especially outside of Japan.  It only came in one set and its hard to find.

This is a really beautiful coach. Since Emily is still produced, I cannot understand why they sell her with the plain gray brake van nowadays. 
At least Tomy UK was selling Emily with the (shorter) green coach, which was very appropriate. The current gray brake van not so much.