It sounds awesome doesn't it! Best thing is the shocks are made by KYB for Toyota and are dirt cheap! Try $70 ea as the list price.
Plus you can get a HKS TEMS contoller that alows you to set them all to hard or all to soft etc.
In reality, it's not as good as a well tuned suspension setup, but it's not a bad compromise. If you are using it as an everyday car then you can select soft for cruising and hard for hills work. It's not a dramatic difference, but a long drive down a bumpy road on soft is preferrable than one on hard.