diff --git a/doc/development/api/restriction.rst b/doc/development/api/restriction.rst
index 0fceeaffd..c45894b9e 100644
--- a/doc/development/api/restriction.rst
+++ b/doc/development/api/restriction.rst
@@ -152,6 +152,19 @@ In our example, the implementation could look like this::
 
         # Walk through all variations we are asked for
         for v in variations:
+            var_restrictions = []
+            for restriction in restrictions:
+                applied_to = list(restriction.variations.current.all())
+
+                # Only take this restriction into consideration if it
+                # is directly applied to this variation or if the item
+                # has no variations
+                if v.empty() or ('variation' in v and v['variation'] in applied_to):
+                    var_restrictions.append(restriction)
+
+            if not var_restrictions:
+                continue
+
             # If this point is reached, there ARE time restrictions for this item
             # Therefore, it is only available inside one of the timeframes, but not
             # without any timeframe
@@ -175,15 +188,7 @@ In our example, the implementation could look like this::
 
             # Walk through all restriction objects applied to this item
             prices = []
-            for restriction in restrictions:
-                applied_to = list(restriction.variations.current.all())
-
-                # Only take this restriction into consideration if it
-                # is directly applied to this variation or if the item
-                # has no variations
-                if not v.empty() and ('variation' not in v or v['variation'] not in applied_to):
-                    continue
-
+            for restriction in var_restrictions:
                 if restriction.timeframe_from <= now() <= restriction.timeframe_to:
                     # Selling this item is currently possible
                     available = True
diff --git a/src/pretix/base/models.py b/src/pretix/base/models.py
index d8621e1b7..b13aa883f 100644
--- a/src/pretix/base/models.py
+++ b/src/pretix/base/models.py
@@ -1022,15 +1022,22 @@ class Item(Versionable):
             else:
                 var['price'] = self.default_price
 
+            # It is possible, that *multiple* restriction plugins change the default price.
+            # In this case, the cheapest one wins. As soon as there is a restriction
+            # that changes the price, the default price has no effect.
+
             newprice = None
             for receiver, response in responses:
-                if 'available' in response[i]:
-                    var['available'] &= response[i]['available']
+                if 'available' in response[i] and not response[i]['available']:
+                    var['available'] = False
+                    break
                 if 'price' in response[i] and response[i]['price'] is not None \
                         and (newprice is None or response[i]['price'] < newprice):
                     newprice = response[i]['price']
             var['price'] = newprice or var['price']
 
+        variations = [var for var in variations if var['available']]
+
         self._get_all_available_variations_cache = variations
         return variations
 
diff --git a/src/pretix/plugins/timerestriction/signals.py b/src/pretix/plugins/timerestriction/signals.py
index 646f68c21..5edbbeaae 100644
--- a/src/pretix/plugins/timerestriction/signals.py
+++ b/src/pretix/plugins/timerestriction/signals.py
@@ -56,9 +56,22 @@ def availability_handler(sender, **kwargs):
 
     # Walk through all variations we are asked for
     for v in variations:
+        var_restrictions = []
+        for restriction in restrictions:
+            applied_to = list(restriction.variations.current.all())
+
+            # Only take this restriction into consideration if it
+            # is directly applied to this variation or if the item
+            # has no variations
+            if v.empty() or ('variation' in v and v['variation'] in applied_to):
+                var_restrictions.append(restriction)
+
+        if not var_restrictions:
+            continue
+
         # If this point is reached, there ARE time restrictions for this item
         # Therefore, it is only available inside one of the timeframes, but not
-        # without any timeframe
+        # without any timeframe.
         available = False
 
         # Make up some unique key for this variation
@@ -79,15 +92,7 @@ def availability_handler(sender, **kwargs):
 
         # Walk through all restriction objects applied to this item
         prices = []
-        for restriction in restrictions:
-            applied_to = list(restriction.variations.current.all())
-
-            # Only take this restriction into consideration if it
-            # is directly applied to this variation or if the item
-            # has no variations
-            if not v.empty() and ('variation' not in v or v['variation'] not in applied_to):
-                continue
-
+        for restriction in var_restrictions:
             if restriction.timeframe_from <= now() <= restriction.timeframe_to:
                 # Selling this item is currently possible
                 available = True