They have no set-up cost or monthly cost. They charge a per transaction fee and have a special low fee for start-ups – 2.9% + 30¢. They accept both credit and debit cards. BlueSnap offers more significant features such as Hosted Checkout, Recurring Payments, Credit Card Vault, PCI Compliance, SSL Support, Multiple Currency Support, and Invoice Creation. They have an excellent knowledge base and after sales support.
You can find out more about them here - https://home.bluesnap.com/