Everyone gets to do what they want with their own vehicle -- that's the joy and virtue of spending your own money on it, and not someone else's. As long as he is happy with it, we are of no mind to criticize.
You can find "cheaper" lift kits, like Rough Country and Pro Comp, but you get what you pay for. You'll get the bare minimum to get it up to height, and most of the components aren't very durable. Since you get the bare minimum, a lot of those components will stress stock parts with geometry they were never meant to continuously operate at. Ergo, premature failure and replacement. Just search around the internet for lift kits and you'll find the range from a few hundred dollars, to five figures. Without crazy modification, 6" is probably a good height.
What size tires do you plan on putting under it? With stock components, I wouldn't go any bigger than 35". Plan on about $1K for tires/wheels if you are buying new... at least. Depending how big you go (and I'm guessing you are not gentle on the skinny pedal if you are just after the image -- I don't mean that in a bad way, it's just an honest observation/inference), take your gas mileage into account, too. You might see that go down into the single digits.
Not trying to scare you off from doing what you want to do. To agree with Cruzer, in a slightly less abrasive fashion, understand what you want and what you want it to do, and then work from there. If you want a street queen, there's nothing wrong with that. Ain't my thing, but ain't my money, either. Look at the link provided above and do some research. Then, let us know if you have any specific questions we can help you with.