Im thinking of getting a new mascara…?

I need one that is less than probably 8 dollars and doesnt make my lashes appear super long. Im 13. I use Maybeline BIG Lash and Maybeline with the curved brush. I want a mascara in either black or brown-black. Im going to Wal-mart soon so I need suggestions fast. PS I have medium brown hair and blue-green (more green) eyes. My skin tone is more on the lighter side. TY and take care!