Unbelievable Sikorsky CH-53E Super Stallion Facts The unit cost for a CH-53E is $24.9 million dollars, not including research and development. The most expensive U.S. helicopter is actually its successor, the CH-53K King Stallion, at $95 million per unit. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50