Mascaras are great for defining your lashes, and, depending on the formula and brush shape, for volumising, thickening, and/or lengthening. I really like Dr Hauschka Volume Mascara, $45, available in three shades. I have it in black, and it’s really good for defining my lashes, and giving them some volume.
I have also used Living Nature Thickening Mascara, $38, available in two shades. I had it in Jet Black, and it’s a decent mascara, but not as volumising as the Dr Hauschka one, and it tends to dry out more quickly, and therefore not last as long before it needs to be replaced (yes, I know you’re supposed to replace your mascara every three months, but for me it tends to be more like four to six months, because I’m cheap). Anyway...
Some other options:
$40 and under: Living Nature Conditioning Mascara $38, available in two shades
$45 and under: Couleur Caramel Eyelashes Mascara Long $41.99, available in four shades, Couleur Caramel Eyelashes Mascara Short $41.99, available in four shades, Dr Hauschka Mascara $43, available in three shades, Bare Escentuals Magic Wand Brushless Mascara $43, available in two shades
$55 and under: Aveda Mosscara $51, available in two shades, Aveda Mascara Plus Rose $51, available in two shades