yes there is a post in on the same discussion form. it is by a rancher about his 142 experience and saying somewhere that moreover it is free. so i moved to ibm site to register and find it asking for 75 USD.
IBM sometimes offer free exams, but nowadays they offer free exams usually for people who are attending their technical conferences. Registrations to the conferences are done online, while registration for the exam is done at the conference hall.
If you are attending such a conference, you can get some exams free. ;)