Harpy 4 price per carton: $13.04 $9.43 6 cartons - $56.59 4 cartons - $39.73 2 cartons - $20.86 Harpy 6 price per carton: $13.04 $9.43 6 cartons - $56.59 4 cartons - $39.73 2 cartons - $20.86 Harpy 8 price per carton: $15.68 $11.41 6 cartons - $68.43 4 cartons - $48.26 2 cartons - $25.08