When I was 18 and had my first child, I started doing my own hair at home. I coudn't afford anymore to pay for salon prices, and just felt "guilty" spending so much on myselft when baby needs this and that.
Well now I'm 27 dealing with VERY damaged hair from over the years using many different box products and have now come to realizing, I can't do that to my hair anymore or I'll be bald at 30! :)
So I found a local salon that cuts and does full highlights for $125. The damage is still growing out but hopefully now I can have the hair I used to have before the "box" dying years. And again, I pretty much tried EVERYTHING on the market, Loreal, Herbal, Revlon, Sally products, etc.
Each time my hair got drier and drier and drier, almost to the point where it hurt to brush through it. I recommend you find an affordable salon and go from there. Box dying will only damage your hair and you don't want that.
Good luck!!