Bulbophyllum fletcherianum 
Near blooming size plant available for sale on offer at $320.
The plant has around 12 growths with leaves and a few old bulbs, the leaves are around 20-40 cm in length. 
Only 1 plant available. 
This Bulbophyllum species under section macrobulbon is quite rare and difficult to come by. Leaves of mature plants can be more than 1 meter in length. The plants usually carry around 30 dark purple flowers on each inflorescence, measuring around 20-25 cm in size.