diff --git a/weboob/capabilities/pricecomparison.py b/weboob/capabilities/pricecomparison.py
new file mode 100644
index 00000000..c8f4f2e6
--- /dev/null
+++ b/weboob/capabilities/pricecomparison.py
@@ -0,0 +1,86 @@
+# -*- coding: utf-8 -*-
+
+# Copyright(C) 2012 Romain Bignon
+#
+# This file is part of weboob.
+#
+# weboob is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# weboob is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with weboob. If not, see <http://www.gnu.org/licenses/>.
+
+
+from .base import IBaseCap, CapBaseObject, Field, FloatField, \
+                  StringField, DateField
+
+
+__all__ = ['Shop', 'Price', 'Product', 'ICapPriceComparison']
+
+
+class Product(CapBaseObject):
+    """
+    A product.
+    """
+    name =      StringField('Name of product')
+
+class Shop(CapBaseObject):
+    """
+    A shop where the price is.
+    """
+    name =      StringField('Name of shop')
+    location =  StringField('Location of the shop')
+    info =      StringField('Information about the shop')
+
+class Price(CapBaseObject):
+    """
+    Price.
+    """
+    date =      DateField('Date when this price has been published')
+    cost =      FloatField('Cost of the product in this shop')
+    currency =  StringField('Currency of the price')
+    message =   StringField('Message related to this price')
+    shop =      Field('Shop information', Shop)
+    product =   Field('Product', Product)
+
+class ICapPriceComparison(IBaseCap):
+    """
+    Capability for price comparison websites.
+    """
+
+    def search_products(self, pattern=None):
+        """
+        Search products from a pattern.
+
+        :param pattern: pattern to search
+        :type pattern: str
+        :rtype: iter[:class:`Product`]
+        """
+        raise NotImplementedError()
+
+    def iter_prices(self, product):
+        """
+        Iter prices for a product.
+
+        :param product: product to search
+        :type product: :class:`Product`
+        :rtype: iter[:class:`Price`]
+        """
+        raise NotImplementedError()
+
+    def get_price(self, id):
+        """
+        Get a price from an ID
+
+        :param id: ID of price
+        :type id: str
+        :rtype: :class:`Price`
+        """
+        raise NotImplementedError()