Have you done any research on the care of Nepenthes edwardsiana? (If you have to ask what kind of potting mix you should be using, you haven't) Can you provide that care? Are you willing to pay $500 - $600 minimum to take home a 4 inch plant? Do you know how big they get?
My point is that some plants, no matter how much we may covet them, should remain in the forest. Maybe just plan a trip to Borneo to view them in situ.