how much article

In my country it costs - 50 cents GOT A LIGHT?

Hello BHW, my question is related to micro niche blogs and adsense monetizing. So, i have 2 blogs with about 10 - 15 articles about the niche, is that enough and am i ready to buy seo optimization package, so i can boost my blogs to gain organic traffic? I am asking that question because most of...