Zuora expects to make $1k/mo off their customers, although I think we could have used them for $500/mo. That's roughly $50k/mo worth of revenue through Spreedly.
Is that something they finally tell you after you sign the NDA? Getting that information was like pulling teeth, and I didn't even have it until you posted it on Hacker news. :)
That fits what they told me pre-nda (at least, the $1k/mo minimum). They did hint that we could get a $500/mo minimum, but never really said much about it.
