Avangate Merchant account bills itself as The Best eCommerce Software Platform for Taking Commerce International. 
Quite a broad and confident statement. I am not sure how they can prove the best, but here is an honest review from an MBA. Avangate (Avangate.com) is clearly in a growth mode working to attract new merchant accounts. From their website they are pushing their Avangate eCommerce Manager and have this to say,
Grow Online Sales Globally Self-Service, Fully Configurable, Fast Time to Market Avangate offers the leading digital commerce platform that lets you sell online quickly. Our customers benefit from a rich set of features that let them transact at every customer touchpoint, introduce new business models such as subscriptions, and reach their target audience globally – all in one seamless solution with rapid setup and cloud scalability.
The website is clear and easy to read. It is up to date and comprehend able by most startups.
Here is the pricing listed on their sites:
Digital Commerce Solutions
Limited to 15K USD per month.
- Sell Online Rapidly
- Accept Visa/MC/PayPal at
2.75% + $0.30 - Subscription Billing
- Merchant Services – Risk, Anti-Fraud, VAT/Tax and many more – at 1.24% + $0.69
Standard Edition
or
 No Revenue Limit!
- Advanced Shopping Cart
- 15 Billing Currencies, 28 Payment Methods
- Subscription Billing & Metering
- A/B Testing and Lead Management
- 50,000+ Affiliates
- 24×7 Phone, Email and Live Chat Support
Enterprise Edition
Custom Pricing
Includes Everything in Standard Edition
- Advanced Subscription Billing
- Complete Marketing Services
- Managed Services and Support
- Advanced Brand Experience
- Integrated Distribution and Payments
- Dedicated Expertise