diff --git a/db/mh4u.db b/db/mh4u.db
index 5022c7b..dd8053a 100644
Binary files a/db/mh4u.db and b/db/mh4u.db differ
diff --git a/db/mh4u/weapon_shop.csv b/db/mh4u/weapon_shop.csv
new file mode 100644
index 0000000..c848d36
--- /dev/null
+++ b/db/mh4u/weapon_shop.csv
@@ -0,0 +1,38 @@
+Iron Sword,1500
+Buster Sword,2550
+Giant Jawblade,5250
+Ravager Blade,5250
+Iron Katana,1500
+Canine Katana,3300
+Eager Cleaver,10950
+Hunter's Knife,1500
+Assassin's Dagger,3300
+Chief Kris,4200
+Matched Slicers,1500
+Chief's Scythes,3300
+Dual Hatchets,4200
+War Hammer,1500
+War Mace,2550
+Bone Bludgeon+,4200
+Iron Striker+,5250
+Metal Bagpipe,1500
+Hunter's Horn,4200
+Heavy Bagpipe+,5250
+Iron Lance,1500
+Knight Lance,2550
+Rampart,5250
+Spiked Javelin,6450
+Iron Gunlance,1500
+Jaggid Gunlance,4200
+Defender's Gunlance,6450
+Bone Axe,1950
+Wild Axe,4200
+Power Gasher,5250
+Elite Blad,1950
+Bone Staff,3300
+Cross Bowgun,2550
+Cross Bowgun+,4200
+Bone Shooter,2100
+Bone Shooter+,5400
+Hunter's Bow I,1500
+Hunter's Stoutbow I,4200
diff --git a/db/set_weapon_buy.py b/db/set_weapon_buy.py
new file mode 100755
index 0000000..84bb496
--- /dev/null
+++ b/db/set_weapon_buy.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python2
+
+import os.path
+import codecs
+import csv
+
+import _pathfix
+
+from mhapi.db import MHDB
+
+
+def set_buy(db, item_id, buy):
+    print "buy", item_id, buy
+    cur = db.cursor()
+    cur.execute("""UPDATE items SET
+                   buy=? WHERE _id=?""",
+                (buy, item_id))
+
+def set_buy_by_name(db, name, buy):
+    cur = db.cursor()
+    cur.execute("""UPDATE items SET
+                   buy=? WHERE name=?""",
+                (buy, name))
+    rowid = cur.lastrowid
+    print "buy", rowid, name, buy
+
+if __name__ == '__main__':
+    db = MHDB(game="4u")
+    delta_file_path = os.path.join(_pathfix.db_path, "mh4u", "weapon_shop.csv")
+
+    with open(delta_file_path) as f:
+        reader = csv.reader(f)
+        for row in reader:
+            name = row[0]
+            value = int(row[1])
+            set_buy_by_name(db, name, value)
+
+    db.commit()
+    db.close()
diff --git a/mhapi/model.py b/mhapi/model.py
index 451dc84..f132372 100644
--- a/mhapi/model.py
+++ b/mhapi/model.py
@@ -641,6 +641,11 @@ def get_costs(db, weapon):
         for item in weapon.create_components:
             create_cost["components"][item.name] = item.quantity
         costs = [create_cost] + costs
+    if weapon.buy:
+        buy_cost = dict(zenny=int(weapon.buy),
+                        path=[weapon],
+                        components={})
+        costs = [buy_cost] + costs
     return costs
 
 
@@ -678,6 +683,10 @@ class ItemStars(object):
         costs = get_costs(self.db, weapon)
         # find least 'expensive' path
         for c in costs:
+            # don't calculate stars from buy cost (buys aren't available
+            # until after item is craftable, sometimes much later)
+            if not c["components"]:
+                continue
             current_stars = self._get_component_stars(c)
             for k, v in current_stars.iteritems():
                 if v is None: