As mentioned in the following thread:
Currently a seller can not offer his product for free whilst charging for shipping if they use Paypal.
If a seller puts his product free they will get a paypal error when a customer wants to pay for shipping. Thus meaning the customer is inconvenienced cant get his free product and the seller cant offer his products.
+20 from me on being able to offer free products whilst charging for shipping and using Paypal to collect shipping fee. :slight_smile: