Everyone in the low end of the business world just uses Tableau or QlikView - neither company is very militant about enforcing their trial licensing; and full versions aren't really all that expensive for a business anyway (~$500 per license per year, but a small company can get away with a single license). Both tools are also much more mature and powerful than this product.
Not saying there's no room for an open source BI platform, but I don't know there's a lot of money in it given the competitive pressure Tableau and Qlik are putting on the SAPs/Oracles of the world. Anything over $100 is going to put you squarely in the realm of real BI tools with MUCH more capability, a much simpler interface, and standardized training programs.
That's for the personal edition, which can only connect to CSV, Excel, MS Access, OData and Tableau's proprietary Data Extract format (TDE). Tableau Online requires your data to be stored in their cloud (which might not be acceptable to some IT departments).
Tableau Online doesn't require you to save your data on our platform if it's stored in AWS, Google, or Azure (example: Amazon Redshift or Aurora). Your can maintain live data connections with datasources hosted on those ecosystems and the source row level data doesn't ever need to land in the Tableau Online platform. More info here: http://www.tableau.com/learn/whitepapers/tableau-online-keep...
And also you need the desktop product to publish to it. Tableau online is a cloud alternative to the on-premise online dashboarding, not for the desktop client.
Not saying there's no room for an open source BI platform, but I don't know there's a lot of money in it given the competitive pressure Tableau and Qlik are putting on the SAPs/Oracles of the world. Anything over $100 is going to put you squarely in the realm of real BI tools with MUCH more capability, a much simpler interface, and standardized training programs.