My organization wants to invest in a low cost BPM platform that we can customize & develop business solutions on top for selling them as packages. we also would like to offer an alternative to our customers to go for a low cost BPM platform for their application development. What are the pricing models that Alfresco follows for its Enterprise Edition & what kind of support do we get ? If we go for the community edition will we get technical support for development as well as for production ?