I've had excellent service from ORD and parts are top shelf quality so Ill use them as an example, feel free to shop around but at min this is what you need...imho:
http://offroaddesign.com/catalog/6inchliftsystem.htm
6" front springs with new U-bolts: $420
6" rear springs w/new U-bolts: $510
Raised steering arm: $75
Steering box brace: $130
Shocks + steering damper: $200
Extended brake lines: $115
Tcase drop: $50
Add $$ for alignment when done, factor in $$ for unforseen issues (may need new brakes, maybe realize ball joints are bad, ect...),... also now is the time to service many items in your frontend since it will be apart...re-pack bearrings ect.....driveline angle adjustment...
Add $$ if you want to up-grade to greasable bushings, HD shackles. ect...
Install isnt too bad, but figure a shop install is going to 2-3X the price. Thats just for the lift, now budget for wheels-tires...$$$
There are too many options and variables to tell someone how much a lift kit is going to cost. What worked for me may not work for you...both pricepoint and goal of suspension outcome. Ultimately you just have to read - read - read as much info as you can and make that decision on your own.
...just my .02$