Stay away from Kegkits.com
My cornies cost me 30 bucks from kegconnection.com each for my first two, then I paid 80 bucks for 6 from Craigslist. I typically see them for around 20 bucks each on craigslist. NorthernBrewer sells them for 35 and Midwest sells them for 30.
A "final CO2 Setup" will cost you whatever you want. I paid $215 from kegconnection.com for 2 corneys, 1 5# CO2 bottle, a dual body regulator, 2 sets of QDs, picnic taps, and hose.
I then paid 80 bucks for 6 more corneys, 13 bucks for 20 feet of beer line, (to make two 10' lines to replace the wimpy 5' lines I had), 40 bucks for a craigslist fridge, 40 bucks in gas to go GET that fridge, (long story), 15 bucks to FILL my new CO2 bottle, 15 bucks for new O-rings for the kegs, (although I now know about McMaster Carr)....and I think that's it.
Now I need to spend 15 bucks at Harbor Freight for a 4-way CO2 Manifold with QDs, 3 more sets of keg QDs for around 40 bucks, 3 more beer lines for 20 bucks, 3 more picnic taps for 6 bucks, and then I'll have my 5 keg setup.
Then I have to spend 30 bucks a tap for Perlick faucets, (too broke to go in on this "group buy" tomorrow), plus 15-20 bucks a shank, for a total of 225 to upgrade to faucets for my 5 kegs.
And by that point, I'll probably want a bigger CO2 tank.
So yeah, not that much.