diff --git a/bonemarketsolver/data/costs.py b/bonemarketsolver/data/costs.py
index 2563b1a..777df7a 100644
--- a/bonemarketsolver/data/costs.py
+++ b/bonemarketsolver/data/costs.py
@@ -136,10 +136,6 @@ class Cost(Enum):
     # Brawling for yourself, large Bone Market crate, 12 at a time
     JURASSIC_FEMUR = (10*ACTION)/12
 
-    # Knotted Humerus
-    # These are accumulated while acquiring other qualities.
-    KNOTTED_HUMERUS = 0
-
     # Nevercold Brass Sliver
     NEVERCOLD_BRASS = 1
 
@@ -235,6 +231,10 @@ class Cost(Enum):
     # Results of Excavation, 6 at a time
     HELICAL_THIGH = (2*PALAEONTOLOGICAL_DISCOVERY)/6
 
+    # Knotted Humerus
+    # Results of Excavation, 4 at a time
+    KNOTTED_HUMERUS = (2*PALAEONTOLOGICAL_DISCOVERY)/4
+
     # Leviathan Frame
     # Results of Excavation
     LEVIATHAN_FRAME = 25*PALAEONTOLOGICAL_DISCOVERY