The price isnt justified because you havnt had the pleasure of building your own is all. If you did a few sets, you would quickly understand the prices.
Is the same way for all of us.
I've built lots of my own brackets in the past. Now I buy just about everything I can. The time saved is the worth the extra money just about every time.
But still, even if you buy a bracket kit, you still need someone to burn it in.
Its all pretty pricey when you dont do your own welding. If you are thinking of getting into mods like this, the best thing you could do is start looking into welding skills and a machine for yourself.
BTW, Brink is starting up a small bracket building business. It would be worth your while to talk to him if you are serious about getting brackets. He can do the same stuff that comes out of the states, but save you the U.S. dollar, big shipping, and exchange rates.