Have you noticed z-billing: http://www.zuora.com/products/zbilling/index.html http://www.zuora.com/products/zbilling/index.html then? Though not startup friendl

Have you noticed z-billing: http://www.zuora.com/products/zbilling/index.html http://www.zuora.com/products/zbilling/index.html then? Though not startup friendly, I guess.