[leon]

There should be an option when creating a product in order to mark it as FREE, that is easier and more understandable to deal with for both admin and users, then the current give your price when an item has a price iqual to 0.

When ordering FREE items only, there is no need for the customer to detail payment method, that process should be ignored and only requiere admins approval (order processed or completed) in order to send the items.