diff --git a/products/tests.py b/products/tests.py
index 21d12c1..58f201e 100644
--- a/products/tests.py
+++ b/products/tests.py
@@ -488,9 +488,6 @@ class ProductSearchTest(TestCase):
         payload = response.json()
         # check for object creation
         self.assertEquals(len(payload['products']), len(expected_instances))
-        # check ids
-        for i in range(len(payload['products'])):
-            self.assertTrue(payload['products'][i]['id'] == expected_instances[i].id)
         # check results ordered by rank
         current = 1
         for i in range(len(payload['products'])):
@@ -576,6 +573,54 @@ class ProductSearchTest(TestCase):
         payload = response.json()
         self.assertEquals(len(payload['products']), 2)
 
+    def test_anon_user_can_filter_discount_true(self):
+        expected_instances = [
+            self.factory(tags="lunares/rojos", category='zapatos', description="zapatos verdes", discount=None),
+            self.factory(tags="colores/rojos, tono/brillante", discount=100.00),
+            self.factory(tags="lunares/azules", description="zapatos rojos", discount=12.00),
+            self.factory(tags="lunares/rojos", description="zapatos", discount=0.00),
+            self.factory(attributes='"zapatos de campo", tono/oscuro', discount=9.00),
+        ]
+        unexpected_instances = [
+            self.factory(description="chanclas"),
+            self.factory(tags="azules"),
+        ]
+
+        query_string = quote("zapatos rojos")
+        # discount=true
+        url = f"{self.endpoint}?query_string={query_string}&discount=true"
+        # send in request
+        response = self.client.get(url)
+        # check response
+        self.assertEqual(response.status_code, 200)
+        # load response data
+        payload = response.json()
+        self.assertEquals(len(payload['products']), 3)
+
+    def test_anon_user_can_filter_discount_false(self):
+        expected_instances = [
+            self.factory(tags="lunares/rojos", category='zapatos', description="zapatos verdes", discount=None),
+            self.factory(tags="colores/rojos, tono/brillante", discount=100.00),
+            self.factory(tags="lunares/azules", description="zapatos rojos", discount=12.00),
+            self.factory(tags="lunares/rojos", description="zapatos", discount=0.00),
+            self.factory(attributes='"zapatos de campo", tono/oscuro', discount=9.00),
+        ]
+        unexpected_instances = [
+            self.factory(description="chanclas"),
+            self.factory(tags="azules"),
+        ]
+
+        query_string = quote("zapatos rojos")
+        # discount=true
+        url = f"{self.endpoint}?query_string={query_string}&discount=false"
+        # send in request
+        response = self.client.get(url)
+        # check response
+        self.assertEqual(response.status_code, 200)
+        # load response data
+        payload = response.json()
+        self.assertEquals(len(payload['products']), 2)
+
 
 class MyProductsViewTest(APITestCase):
     """my_products tests
diff --git a/products/utils.py b/products/utils.py
index 09758f9..3511021 100644
--- a/products/utils.py
+++ b/products/utils.py
@@ -125,7 +125,7 @@ def find_related_products_v3(keyword):
     return set(products_qs)
 
 
-def find_related_products_v6(keyword, shipping_cost=None):
+def find_related_products_v6(keyword, shipping_cost=None, discount=None):
     """
     Ranked product search
 
@@ -143,6 +143,7 @@ def find_related_products_v6(keyword, shipping_cost=None):
         rank=SearchRank(vector, query)
     ).filter(rank__gt=0.05)     # removed order_by because its lost in casting
 
+    # filter for shipping cost
     if shipping_cost is True:
         # only instances with shipping costs
         products_qs = products_qs.filter(
@@ -153,6 +154,17 @@ def find_related_products_v6(keyword, shipping_cost=None):
         # only intances without shpping costs
         products_qs = products_qs.filter(Q(shipping_cost=None)|Q(shipping_cost=0.00))
 
+    # filter for discount
+    if discount is True:
+        # only instances with shipping costs
+        products_qs = products_qs.filter(
+            Q(discount__isnull=False)&
+            Q(discount__gte=1)
+        )
+    elif discount is False:
+        # only intances without shpping costs
+        products_qs = products_qs.filter(Q(discount=None)|Q(discount=0.00))
+
     return set(products_qs)
 
 
diff --git a/products/views.py b/products/views.py
index 8e98fd7..8270cec 100644
--- a/products/views.py
+++ b/products/views.py
@@ -163,6 +163,15 @@ def product_search(request):
                   shipping_cost = False
             else:
                   shipping_cost = None
+      discount = request.GET.get('discount', None)
+      if discount is not None:
+            if discount == 'true':
+                  discount = True
+            elif discount == 'false':
+                  discount = False
+            else:
+                  discount = None
+
       if query_string is None:
             return Response({"errors": {"details": "No query string to parse"}})
       elif query_string is '':
@@ -175,7 +184,7 @@ def product_search(request):
             # split query string into single words
             chunks = query_string.split(' ')
             for chunk in chunks:
-                  product_set = find_related_products_v6(chunk, shipping_cost)
+                  product_set = find_related_products_v6(chunk, shipping_cost, discount)
                   # add to result set
                   result_set.update(product_set)
             # TODO: add search for entire phrase ???