eCommerce for Plone
PCommerce (Plone commerce) provides a simple shop system which supports:
To register a new payment method for PCommerce register a utility implementing the IPaymentMethod interface. If your payment method requires data from the user set the pre_view_name attribute of the utility to the name of the view implementing IPreOrderView which provides the necessary fields. If you would like to display information after ordering set the post_view_name attribute to the name of the view providing those.
For a simple example pcommerce.email provides a payment method which simply sends an email to the administrator containing the billing address.
Products.CurrencyUtility - to add support for multiple currencies
ImageTag_CorePatch - to add support for dynamic image scaling [http://www.zope.org/Members/bowerymarc/ImageTag_CorePatch/0.3/ImageTag_CorePatch.tgz]