I got my Jack LaLanne juicer from Costco for less than $100. If you don't have a Costco membership, you can request a day pass from the Customer Service desk, but you'll have to pay for your purchases with cash (or a debit card...ask when you go in).
Anyway, I love my juicer. It's not the same to use a blender. It's a bit of a pain to clean the juicer, but it can be done in 10 minutes or less. What's great is minimal prep for the fruits and vegetables. The juice tastes great! Kale + apple = awesome. Carrot, apple, and ginger = delicious.
Check craigslist.org and the like for people selling used, too.