Dan, FastSpring’s CEO, here. That’s a good question. With FastSpring, you don’t lose track of your site visitors because we support cross-domain tracking. When a purchase doesn’t complete, you can see the order issues and resolve them as appropriate. You can experiment with various designs and flows because FastSpring order pages are highly flexible and customizable in terms of how the order flow can look, placement of various elements on the order page, etc. and A/B testing is supported. FastSpring all-inclusive, turnkey functionality is mainly UI based. Little coding is needed, it’s all there – functionality you need to launch and functionality you need to grow and maximize the business and its revenue. FastSpring pricing of its all-inclusive service includes the higher processing costs inherent in international transactions, Amex transactions, and certain alternative payment methods.

Here are some advantages to FastSpring: FastSpring works with developers and companies located anywhere US companies are authorized to do business, handles global tax compliance and tax payment management including for VAT, enables end users to pay using their localized currency to avoid bank/exchange fees and a poor US/USD-centric user experience, provides an order page localized in 20+ languages, has PayPal integrated, lets you skip the PCI Assessment Questionnaire, offers fraud prevention, a built-in shopping cart, Google Analytics and marketing ad campaign tracking integration, an unlimited number of easy to setup post-order notifications, designs an order page to match the look and feel of the other pages of the developer’s website, offers merchandising features for cross and upselling to maximize the average order size and optimizer order conversion, built-in notifications, a future bill testing GUI, pre-bill notifications for annual subscriptions, reseller and affiliate management, user role mgmt. & change tracking, consulting for SEO/PPC/Affiliate marketing/Online marketing/order page optimization, one-time purchases in addition to recurring billing, among other advantages. Hope that's helpful with your comparison.