Pro: sample shipping, attachments and access rules
Sample shipping: add the Sample shipping method to your zones. It shows only when the cart holds nothing but samples, flat or free, and can hide your other methods.
Attachments: give a product a PDF care guide or spec sheet, sent with the order emails of orders that hold its sample.
Who can order samples: everyone, logged in customers or guests, chosen roles, chosen countries, or first time customers only.
Abuse protection: stops repeat free sample orders to the same address, phone or connection under different emails. Only fingerprints are stored.
