Free: Contests & Raffles.
I love my mountain extreme 400's. Next pair will be the uninsulated though, as my feet don't tend to get too cold. Kenetrek looks like they just came out with a new mountain boot for 2010 you might want to take a look at also.
If anyone is near Bellingham Yeager's has Kenetrek's on sale right now. I just picked up the mountain extremes for $269. So far I like them alot. Can't wait to really test them out.