It pains me to watch all these awesome features rolling out but knowing that the pricing is keeping me from signing up. The app I'm building will allow sellers to charge ~$1 for items, and with the 30¢ + 2.9%, Stripe's fees take up a third of the revenue. Hard to convince sellers to use a platform that takes that much.
AWS and PayPal seem like the only viable options for us, at this point, but I anxiously await the day that Stripe rolls out a micropayment pricing tier.