The only kit we offer is way more than $700. I'm not aware of any that are in that price range...yet. As the car ages, the aftermarket supply will catch up with demand and you will see the price go down. How long before it reaches the price range you are looking for is anybody's guess, but I wouldn't bet on it for a couple of years.
There is also the "rice factor" as stated in the thread already. There are a lot of people who perceive this as a modification that only "ricer's" would do and so the demand may never reach as high as it would on other car models. I can't say that I agree with that. I believe that personalizing a car is just that, personal. I wouldn't buy a Chevy Malibu, but that doesn't mean that they shouldn't make it!