Wow $20 for 5 oz? How much of it did you use each time you DT'd?

I may have to start DTing this winter (don't really make it a habit of doing it). Now that Global Warming has suddenly disappeared and it's barely 30 degrees here in NYC nowadays, my curls has gone on vacation
3a/3b thick coarse WL dark brown hair. CG/Mod CG since: 5/4/05. Current products: Right now my hair is in such a tizzy over this winter weather we are hving that nothing really seems to be working. I need a haircut.