diff --git a/rattail/pyramid/templates/reports/ordering.mako b/rattail/pyramid/templates/reports/ordering.mako
index 2eca252f..4cd014fc 100644
--- a/rattail/pyramid/templates/reports/ordering.mako
+++ b/rattail/pyramid/templates/reports/ordering.mako
@@ -34,6 +34,10 @@ ${h.hidden('departments', value='')}
   <div class="grid"></div>
 </div>
 
+<div class="field-wrapper">
+  ${h.checkbox('preferred_only', label="Include only those products for which this vendor is preferred.", checked=True)}
+</div>
+
 <div class="buttons">
   ${h.submit('submit', "Generate Report")}
 </div>
diff --git a/rattail/pyramid/views/reports.py b/rattail/pyramid/views/reports.py
index 0df29850..4776fa92 100644
--- a/rattail/pyramid/views/reports.py
+++ b/rattail/pyramid/views/reports.py
@@ -34,7 +34,8 @@ def ordering_report(request):
                     dept = Session.query(rattail.Department).get(uuid)
                     if dept:
                         departments.append(dept)
-            body = write_ordering_worksheet(vendor, departments)
+            preferred_only = request.params.get('preferred_only') == '1'
+            body = write_ordering_worksheet(vendor, departments, preferred_only)
             response = Response(content_type='text/html')
             response.headers['Content-Length'] = len(body)
             response.headers['Content-Disposition'] = 'attachment; filename=ordering.html'
@@ -43,7 +44,7 @@ def ordering_report(request):
     return {}
 
 
-def write_ordering_worksheet(vendor, departments):
+def write_ordering_worksheet(vendor, departments, preferred_only):
     """
     Rendering engine for the ordering worksheet report.
     """
@@ -52,6 +53,8 @@ def write_ordering_worksheet(vendor, departments):
     q = q.join(rattail.Product)
     q = q.filter(rattail.ProductCost.vendor == vendor)
     q = q.filter(rattail.Product.department_uuid.in_([x.uuid for x in departments]))
+    if preferred_only:
+        q = q.filter(rattail.ProductCost.preference == 1)
 
     costs = {}
     for cost in q: