If you're doing a million in sales, you should negotiate a rate with your CC provider which will be far lower than the list price. All of the providers - Stripe, Braintree, PayPal, Authorize.net, and most likely these guys - will negotiate a rate with you, and if you're doing any volume you ought to give them a call and ask.
When you call, they will ask you two important things:
1. What is your current volume (if you're looking at switching from someone else)
2. What is your chargeback rate? (How often do angry customers call the credit card company to issue a chargeback against you?)
If you are growing and have increasing transaction volume, and you aren't defrauding your customers, then you can absolutely get a lower rate than you're paying now.
This is true for so many things in business - the list price means nothing!
1 million plays on Pandora is like one play on FM radio with an audience of 1 million, or 10 plays with an audience of 100,000. Either way, their royalties are more expensive than ones of radio stations.
data-* attributes on all the elements. But switched up and randomised so you wouldn't be able to strip them out with a single line of XSLT; and for greater annoyance, some of them would be required to make the design work, so stripping them out with a regex would break things.
Make 'em work for the free html they designed with your tool...
If it seems like a waste of effort on both sides, that's because it is.
Given that tools like this appear to be easy to write and easy to launch they should probably be sold to hosting companies not designers. As in, you'd make more money selling AutoMattic the whole shebang to use for designing things on top of Wordpress or it's successor than you would trying to sell $9/month subscriptions to would be web designers.
Funny how Amazon AWS newsletter gets flagged as spam by gmail each and every time. Even if I tell it 'not spam' each and every month. Something tells me Amazon SES will not get a better gmail treatment.