diff --git a/commands/update_gui.py b/commands/update_gui.py
index fd411b4e..d261ab10 100644
--- a/commands/update_gui.py
+++ b/commands/update_gui.py
@@ -262,8 +262,8 @@ def validate(self, widget):
             # It seems that stations usually pay within 25% of the
             # asking price as a buy-back price. If the user gives
             # us something out of those bounds, check with them.
-            if paying < int(asking * 0.75) or \
-                    paying < asking - 200:
+            if paying < int(asking * 0.72) or \
+                    paying < asking - 250:
                 widget.bell()
                 ok = mbox.askokcancel(
                         "Are you sure about that?",