Bulbophyllum carunculatum flava 
Near blooming size plant potted in 4" pot available for sale at $80.
The plant is grown from a cutting, separated from the parent plant around 1 year ago, already well established in the new pot. 
Only one plant available. 

This rare flava variety of Bulbophyllum carunculatum has yellow coloured flowers. The whole flower, even the lip of the flowers are yellow in colour. The flowers are around 5 cm in size. The flower image is from the previous flowering of the parent plant.

Bulbophyllum carunculatum flava