If you on a budget, then yes, it will be cheaper then getting a full adjustable coil over setup.
I have used King Springs before but in my daily + I would also look into Nismo / Tein / Bilsteins / KYB Springs.
As of my personal choice, I'd just got full adjustable coil over set up.
Tein / Cusco / HKS / Bilsteins, just to name a few.