Do you run a website or are you going to sell in small quantities using AutoBuy URLs?
Most automatic sales URLs are closer to delivery sites because they do not include any escrow for the buyer. they are payment gateway, when the user complete transaction you get your money, No refunded or other.

Best alternative:
 - Blockonomics: Bitcoin only, First 10 transaction free and 1% per transaction for others.
 - Rocketr:Free