Anaerobic digestion - Wikipedia, the free encyclopedia

Sam Rose's picture
Posted Wed, 03/10/2010 - 23:00 by Sam Rose

Using industry-average data, the cost of selling a Blackboard enterprise learning system is estimated to be $259,000 per sale….This cost compares to an estimated cost of $78,000 per sale for commercially-marketed open source software and $450 to $1000 for community-building for the uPortal product.

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