Bodykit Installation? Pricey?

I want to get the LSE bodykit.. I was decided that or the Wings West kit. I just like the LSE look. Here's my question. I was watching "Pimp my ride" (I know, I'm 12 years old for watching it) but anyway.. there was a guy who bought a kit, but the installation was just as costly as the kit itself.

Anyone who has boughten an bodykit.. How $$$ would it be to install it? Of course I'll have to get it painted to match my car color.. But could it be something that I can install myself?

Is the any other kit other than the LSE or WW kit?