I found this completed roombox at a garage sale for $25. The only things I added were the three floral arrangements, oriental rug and the two horse sculptures.
After doing a bit of research, I learned that this roombox was sold by The Franklin Mint, and is called the "Chinese Empress Mini Room". It was originally offered and retired in 1984. The room was shipped in 12 shipments. Each shipment was issued for $34.50. That's a total of $415 that I got for $25! What a deal!

A view of the left side of the roombox showing the porcelain vases that came with the roombox.

A view of the right side showing the horse sculptures I added which I found at a mini show for $2 each.