They do promotions every now and then where you can get it for free, since nobody likes it and buys it
Actually, Lindows/Linspire is just based on Debian, and they changed a few things and decided to sell it. You'd be better off getting one of the free distros (Redhat, Debian, etc), instead of paying for something that is exactly the same.
Hmm.. I just remembered that I have taken advantage of one of those free promotions (I belive it was the Google one), and never actually downloaded it (never needed to, never wanted to), and it's still avaliable for me to download. Unfortunately, it would most likely be illegal for me to share, even if I did get it for free (legally).