Give a try to CoinGate(https://coingate.com/) We are doing Bitcoin and Altcoins Payment Processing and offer some additional benefits for our merchants.
CoinGate has proved to be the cheapest cryptocurrency processing company (check the study of redditors: https://www.reddit.com/r/Bitcoin/comments/5bulbv/a_comparison_of_7_bitcoin_payment_processors_and/)

And there are a few more perks:

• It can be easily integrated using our payments buttons or API with the help of our technical team.
• We take away all the hassles of checking and processing payments manually - you get notified of each payment by email.
• You will be able to accept Bitcoin and 50+ other cryptocurrencies via our ShapeShift partnership.
• All the payouts can be kept in Bitcoins or made to your bank or PayPal account in Euros / U.S. Dollars.

Let us know if it sounds good for you and feel free to reach us out for any inquiries!

Best regards,
CoinGate