$350 million(400億ぐらい？)だそうです。
JBoss acquired by Red Hat
http://www.theserverside.com/news/thread.tss?thread_id=39866
Red Hat buys JBoss: My Mixed Reaction - O'Reilly ONJava Blog
http://www.oreillynet.com/onjava/blog/2006/04/red_hat_buys_jboss_my_mixed_re.html?CMP=OTC-FP2116136014&ATT=Red+Hat+buys+JBoss+My+Mixed+Reaction
IBM developerWorks : Blogs : The Apache Geronimo Experience
http://www-03.ibm.com/developerworks/blogs/page/dklavon?entry=redhat_to_acquire_jboss
