"Naturally, Zuora has opted for a utility-like pricing model. The company will take 2% of all invoiced amounts, with that percentage increasing decreasing as payments get bigger and eventually getting capped completely for particularly expensive items."
http://www.techcrunch.com/2008/05/20/zuora-the-salesforce-fo...
"Naturally, Zuora has opted for a utility-like pricing model. The company will take 2% of all invoiced amounts, with that percentage increasing decreasing as payments get bigger and eventually getting capped completely for particularly expensive items."