80% seems to be the common 'educated guess' number: http://www.quora.com/What-should-be-the-typical-gross-margin-for-a-SaaS-startup http://www.quora.com/What-s

80% seems to be the common 'educated guess' number: http://www.quora.com/What-should-be-the-typical-gross-margin-for-a-SaaS-startup http://www.quora.com/What-should-be-the-typical-gross-margin... http://www.forentrepreneurs.com/saas-metrics-2-definitions/ http://www.forentrepreneurs.com/saas-metrics-2-definitions/ http://www.forbes.com/sites/jjcolao/2012/10/02/running-a-saas-business-answer-these-four-questions/ http://www.forbes.com/sites/jjcolao/2012/10/02/running-a-saa...