Paphiopedilum rothschildianum 
Blooming size plant in a 3.5" pot available for sale at $120.
Only 1 plant available. 
The plant has 2 growths, with a leaf span of around 70 cm.

This Paphiopedilum species is also known as the king of Paphiopedilum. The flower petals open sideways, pointing slightly downwards. The petals can be up to 30 cm in length. This species is highly sought after and plants of this size are difficult to come by.