diff --git a/commands/market_cmd.py b/commands/market_cmd.py
index 815c2cd1..72afc250 100644
--- a/commands/market_cmd.py
+++ b/commands/market_cmd.py
@@ -79,7 +79,7 @@ def run(results, cmdenv, tdb):
         row = ResultRow()
         row.item = item
         row.buyCr = int(next(it) or 0)
-        row.avgBuy = tdb.avgBuying[item.ID]
+        row.avgBuy = tdb.avgBuying.get(item.ID, 0)
         units, level = int(next(it) or 0), int(next(it) or 0)
         row.buyUnits = units
         row.buyLevel = level
@@ -89,7 +89,7 @@ def run(results, cmdenv, tdb):
         else:
             hasBuy = False
         row.sellCr = int(next(it) or 0)
-        row.avgSell = tdb.avgSelling[item.ID]
+        row.avgSell = tdb.avgSelling.get(item.ID, 0)
         units, level = int(next(it) or 0), int(next(it) or 0)
         row.sellUnits = units
         row.sellLevel = level
diff --git a/commands/station_cmd.py b/commands/station_cmd.py
index 09f7e09d..d047024d 100644
--- a/commands/station_cmd.py
+++ b/commands/station_cmd.py
@@ -347,7 +347,7 @@ class ItemTrade(object):
         def __init__(self, ID, price, avgAgainst):
             self.ID, self.item = ID, tdb.itemByID[ID]
             self.price = int(price)
-            self.avgTrade = avgAgainst[ID]
+            self.avgTrade = avgAgainst.get(ID, 0)
 
     # Look up all selling and buying by the station
     selling, buying = [], []
@@ -358,9 +358,9 @@ def __init__(self, ID, price, avgAgainst):
                 AND (demand_price > 10 or supply_price > 10)
     """, [station.ID])
     for ID, demand_price, supply_price in cur:
-        if demand_price > 10 and avgSell[ID] > 10:
+        if demand_price > 10 and avgSell.get(ID, 0) > 10:
             buying.append(ItemTrade(ID, demand_price, avgSell))
-        if supply_price > 10 and avgBuy[ID] > 10:
+        if supply_price > 10 and avgBuy.get(ID, 0) > 10:
             selling.append(ItemTrade(ID, supply_price, avgBuy))
     selling.sort(
             key=lambda item: item.price - item.avgTrade,
diff --git a/commands/trade_cmd.py b/commands/trade_cmd.py
index a9fa6456..e33652fb 100644
--- a/commands/trade_cmd.py
+++ b/commands/trade_cmd.py
@@ -79,24 +79,24 @@ def render(results, cmdenv, tdb):
             key=lambda row: row.costCr)
     if cmdenv.detail > 1:
         rowFmt.addColumn('AvgCost', '>', 10,
-                key=lambda row: tdb.avgSelling[row.item.ID]
-                )
+            key=lambda row: tdb.avgSelling.get(row.item.ID, 0)
+        )
         rowFmt.addColumn('Buying', '>', 10,
-                key=lambda row: row.costCr + row.gainCr
-                )
+            key=lambda row: row.costCr + row.gainCr
+        )
         rowFmt.addColumn('AvgBuy', '>', 10,
-                key=lambda row: tdb.avgBuying[row.item.ID]
-                )
+            key=lambda row: tdb.avgBuying.get(row.item.ID, 0)
+        )
 
     if cmdenv.detail:
         rowFmt.addColumn('Supply', '>', 10,
-                key=lambda row: '{:n}'.format(row.supply) if row.supply >= 0 else '?')
+            key=lambda row: '{:n}'.format(row.supply) if row.supply >= 0 else '?')
         rowFmt.addColumn('Demand', '>', 10,
-                key=lambda row: '{:n}'.format(row.demand) if row.demand >= 0 else '?')
+            key=lambda row: '{:n}'.format(row.demand) if row.demand >= 0 else '?')
         rowFmt.addColumn('SrcAge', '>', 8, '.2f',
-                key=lambda row: (row.srcAge / 86400))
+            key=lambda row: (row.srcAge / 86400))
         rowFmt.addColumn('DstAge', '>', 8, '.2f',
-                key=lambda row: (row.dstAge / 86400))
+            key=lambda row: (row.dstAge / 86400))
 
     if not cmdenv.quiet:
         heading, underline = rowFmt.heading()