I purchase a pound of color the gray base color and a pound of chestnut brown. It cost a total of about $32 and lasts me a whole year. It is a pain because every time you color, you have to do it twice, but it's worth it. I re-color my hair about every 3-4 weeks. People don't even know my hair is colored. What was previously gray/white comes out slightly coppery brown, and my regular hair color is medium ash brown, so it just looks like my hair is highlighted.