diff --git a/commands/run_cmd.py b/commands/run_cmd.py
index 9dcb73bf..de8624ac 100644
--- a/commands/run_cmd.py
+++ b/commands/run_cmd.py
@@ -139,6 +139,12 @@
             type=int,
             default=1
         ),
+    ParseArgument('--max-gain-per-ton', '--mgpt',
+            help='Specify the minimum gain per ton of cargo',
+            dest='maxGainPerTon',
+            type=int,
+            default=10000
+        ),
     ParseArgument('--unique',
             help='Only visit each station once.',
             action='store_true',
diff --git a/tradecalc.py b/tradecalc.py
index a1d84ec4..0cb25fee 100644
--- a/tradecalc.py
+++ b/tradecalc.py
@@ -684,13 +684,14 @@ def getProfitables(self, srcSelling, dstBuying):
         itemIdx = self.tdb.itemByID
         trading = []
         minGainCr = max(1, self.tdenv.minGainPerTon or 1)
+        maxGainCr = max(1000, self.tdenv.maxGainPerTon or 10000)
         for buy in dstBuying:
             buyItemID = buy[0]
             for sell in srcSelling:
                 sellItemID = sell[0]
                 if sellItemID == buyItemID:
                     buyCr, sellCr = buy[1], sell[1]
-                    if sellCr + minGainCr <= buyCr:
+                    if sellCr + minGainCr <= buyCr and sellCr + maxGainCr >= buyCr:
                         trading.append(Trade(
                             itemIdx[buyItemID],
                             buyItemID,