We implemented stripe as an add-on a little more than 6 years ago and left it mostly untouched. After some recent TLC we now facilitate $100 million a year through Stripe. Our next hurdle is trying to integrate Stripe terminal for thousands of customers but $300 a pop is a tough sell.
For huge Terminal device orders like that, we can help with a volume discount. Just email in to support@stripe.com with how many you need (feel free to CC me at edwin@stripe.com).
(BTW, if you didn't see, we have a $59 device too. We're also working on supporting more.)