What are the typical risks one would face after buying the EA modeling tool? Is there any parameter that I have to see before buying an EA tool?

http://live.icmgworld.com/index.php/askthearchitects/groups/viewdiscussion/166-what-are-the-typical-risks-one-would-face-after-buying-the-ea-modeling-tool-is-there-any-parameter-that-i-have-to-see-before-buying-an-ea-tool.html?groupid=7