Bulbophyllum lobbii flava 
Blooming size division in a 3.5" pot available for sale at $100.
Only 1 plant available. 
The plant has 2 growths. 
The flower images are from the exact plant.  The flowers are around 7-8 cm in size, bright yellow in colour and have a sweet fragrance. This variety of Bulbophyllum lobbii is quite uncommon and hard to come by.