The problem I have with threads like this is, they probably would like an unbiased opinion. It is asked in the LFS forum and what do you think everyone will say? Don't get it? Of course get it. It is the best out there. If I went to the GTL forum and asked the same for GTL, what answer would I get? I would get, yes it is worth it. In my opinion with trying the demo, it isn't worth the time I took downloading the demo let alone paying money for it. Go to the rFactor forum and of course you will get the same answer for rFactor, that it is worth it. Opinions OUTSIDE of the rFactor or GTL or even LFS forum would differ greatly from the answers you would get within their respective forums.
This is my unbiased opinion, yes, LFS is worth it!! A great sim, a great community, a great development team, and great racing. That is what I get for my $42 USD!!