diff --git a/corepos/enum.py b/corepos/enum.py
index 62c16ac..f0860ea 100644
--- a/corepos/enum.py
+++ b/corepos/enum.py
@@ -92,3 +92,14 @@ MEMBER_CONTACT_PREFERENCE = OrderedDict([
     (MEMBER_CONTACT_PREFERENCE_EMAIL_ONLY,              "email only"),
     (MEMBER_CONTACT_PREFERENCE_BOTH,                    "both (postal mail and email)"),
 ])
+
+
+PRODUCT_PRICE_METHOD_DISABLED           = 0
+PRODUCT_PRICE_METHOD_ALWAYS             = 1
+PRODUCT_PRICE_METHOD_FULL_SETS          = 2
+
+PRODUCT_PRICE_METHOD = OrderedDict([
+    (PRODUCT_PRICE_METHOD_DISABLED,     "Disabled"),
+    (PRODUCT_PRICE_METHOD_ALWAYS,       "Always use this price"),
+    (PRODUCT_PRICE_METHOD_FULL_SETS,    "Use this price for full sets"),
+])