Well, for a real solid setup you'd need things like a SYE and driveshaft, control arms, trackbar, extended brake lines, bumpstops, and a few other things.
I just bought the kit, threw it on, and poof, I was done. I got the Rusty's AAL kit for $240 including shocks.
Eventually I plan on going bigger, and at that time I'll get all those other things that should go along with a lift. But if you want a cheap lift, this would be the way to go. I love it. It seems to ride smoother than before, probably because of the new shocks, and has handled everything I've thrown at it so far offroad.
If you do have the extra money, go with full packs though. The only reasons I didn't was because I didn't have enough money, and in another year when college gets done, I'll be redoing it all anyways.
2004 Jeep Wrangler Unlimited
TSE - A Jeep Club